EXHIBIT 1

                        NEXTLINK Communications, L.L.C.
                            NEXTLINK Capital, Inc.
                    12 1/2% Senior Notes due April 15, 2006

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                               Purchase Agreement
                               ------------------
                                                                  April 18, 1996


Goldman, Sachs & Co.,
Bear, Stearns & Co. Inc.,
Salomon Brothers Inc,
Toronto Dominion Securities (USA) Inc.,
c/o Goldman, Sachs & Co.,
85 Broad Street,
New York, New York 10004.

Ladies and Gentlemen:

   NEXTLINK Communications, L.L.C., a limited liability company formed under the
laws of the State of Washington (the "Company") and NEXTLINK Capital, Inc., a
Washington corporation ("Capital"), propose, subject to the terms and conditions
stated herein, to issue and sell to the Purchasers named in Schedule I hereto
(the "Purchasers") an aggregate of $350,000,000 principal amount of the Notes
specified above (the "Securities").

   1.  The Company and Capital, jointly and severally, represent and warrant to,
and agree with, each of the Purchasers that:

       (a) A preliminary offering circular, dated March 28, 1996 (the
   "Preliminary Offering Circular") and an offering circular in final form,
   dated April 18, 1996 (the "Offering Circular") have been prepared in
   connection with the offering of the Securities.  Any reference to the
   Preliminary Offering Circular or the Offering Circular shall be deemed to
   refer to and include any Additional Issuer Information (as defined in Section
   5(f)) furnished by the Company or Capital prior to the completion of the
   distribution of the Securities.  The Preliminary Offering Circular or the
   Offering Circular and any amendments or supplements thereto did not and will
   not, as of their respective dates, contain an untrue statement of a material
   fact or omit to state a material fact necessary in order to make the
   statements therein, in the light of the circumstances under which they were
   made, not misleading; provided, however, that this representation and
   warranty shall not apply to any statements or omissions made in reliance upon
   and in conformity with information furnished in writing to the Company or
   Capital by a Purchaser through Goldman, Sachs & Co. expressly for use
   therein;

 
       (b) None of the Company, any of its subsidiaries (which term is used
   herein as defined in the Indenture referred to in Section 1(g) below) or
   Capital has sustained since the date of the latest audited financial
   statements included in the Offering Circular any material loss or
   interference with its business from fire, explosion, flood or other calamity,
   whether or not covered by insurance, or from any labor dispute or court or
   governmental action, order or decree, otherwise than as set forth or
   contemplated in the Offering Circular; and, since the respective dates as of
   which information is given in the Offering Circular, there has not been any
   material change (except as described therein) in the aggregate level of
   membership interests or long-term debt of the Company or any of its
   subsidiaries, or in the capital stock or long-term debt of Capital, or any
   material adverse change, or any development involving a prospective material
   adverse change, in or affecting the general affairs, management, financial
   position, members' equity, shareholders' equity or results of operations of
   the Company, its subsidiaries and Capital, otherwise than as set forth or
   contemplated in the Offering Circular;

       (c) The Company and its subsidiaries have good and marketable title in
   fee simple to all real property and good and marketable title to all personal
   property owned by them, in each case free and clear of all liens,
   encumbrances and defects except such as are described in the Offering
   Circular or such as do not materially affect the value of such property and
   do not materially interfere with the use made and proposed to be made of such
   property by the Company and its subsidiaries; and any real property and
   buildings held under lease by the Company and its subsidiaries are held by
   them under valid, subsisting and enforceable leases with such exceptions as
   are not material and do not materially interfere with the use made and
   proposed to be made of such property and buildings by the Company and its
   subsidiaries;

       (d) The Company has been duly formed and is validly existing as a limited
   liability company under the laws of the State of Washington, with power and
   authority to own its properties and conduct its business as described in the
   Offering Circular, and has been duly qualified as a foreign limited liability
   company for the transaction of business under the laws of each other
   jurisdiction in which it owns or leases properties or conducts any business
   so as to require such qualification, or is subject to no material liability
   or disability by reason of the failure to be so qualified in any such
   jurisdiction; and each subsidiary of the Company has been duly formed and is
   validly existing as a limited liability company or limited partnership under
   the laws of its jurisdiction of formation and has been duly qualified as a
   foreign limited liability company or limited partnership for the transaction
   of business under the laws of each other jurisdiction in which it owns or
   leases properties or conducts any business so as to require such
   qualification, or is subject to no material liability or disability by reason
   of the failure to be so qualified in any such jurisdiction;

       (e) Capital has been duly incorporated and is validly existing as a
   corporation under the laws of the State of Washington, with full corporate
   power and authority to conduct its business as described in the Offering
   Circular, and has been duly qualified as a foreign corporation for the
   transaction of business under the laws of each other jurisdiction in which it
   conducts any business so as to require such qualification, or is

                                       2

 
   subject to no material liability or disability by reason of the failure to be
   so qualified in any jurisdiction;

       (f) The Company and Capital have an authorized capitalization as set
   forth in the Offering Circular, and all of the issued membership interests of
   the Company have been duly and validly authorized and issued, and all of the
   issued shares of capital stock of Capital have been duly and validly
   authorized and issued and are fully paid and non-assessable; and all of the
   issued membership interests or partnership interests, as the case may be, of
   each subsidiary of the Company have been duly and validly authorized and
   issued, and (except as otherwise set forth in the Offering Circular in
   respect of the minority interests described therein) are owned directly or
   indirectly by the Company, free and clear of all liens, encumbrances,
   equities or claims; and all of the shares of capital stock of Capital owned
   by the Company are owned free and clear of all liens, encumbrances, equities
   or claims (except as otherwise set forth in the Offering Circular;

       (g) The Securities have been duly authorized and, when issued and
   delivered pursuant to this Agreement, will have been duly executed,
   authenticated, issued and delivered and will constitute valid and legally
   binding obligations of the Company and Capital entitled to the benefits
   provided by the indenture to be dated as of April 25, 1996 (the "Indenture")
   between the Company, Capital and United States Trust Company of New York, as
   Trustee (the "Trustee"), under which they are to be issued, which will be
   substantially in the form previously delivered to you; the Indenture has been
   duly authorized and, when executed and delivered by the Company, Capital and
   the Trustee, the Indenture will constitute a valid and legally binding
   instrument, enforceable in accordance with its terms, subject, as to
   enforcement, to bankruptcy, insolvency, reorganization and other laws of
   general applicability relating to or affecting creditors' rights and to
   general equity principles; and the Securities and the Indenture will conform
   to the descriptions thereof in the Offering Circular and will be in
   substantially the form previously delivered to you;

       (h) None of the transactions contemplated by this Agreement (including,
   without limitation, the use of the proceeds from the sale of the Securities)
   will violate or result in a violation of Section 7 of the United States
   Securities Exchange Act of 1934, as amended (the "Exchange Act"), or any
   regulation promulgated thereunder, including, without limitation, Regulations
   G, T, U, and X of the Board of Governors of the Federal Reserve System;

       (i) The issue and sale of the Securities and the compliance by the
   Company and Capital with all of the provisions of the Securities, the
   Indenture, the Registration Rights Agreement (as hereinafter defined in
   Section 1(s) hereof), the Pledge Agreement (as hereinafter defined in Section
   1(t) hereof) and this Agreement and the consummation of the transactions
   herein and therein contemplated will not conflict with or result in a breach
   or violation of any of the terms or provisions of, or constitute a default
   under, any indenture, mortgage, deed of trust, loan agreement or other
   agreement or instrument (including without limitation, any license,
   franchise, permit, consent or similar authorization granted to the Company or
   any subsidiary of the Company by any

                                       3

 
   franchising or other governmental body) to which the Company or any of its
   subsidiaries is a party or by which the Company or any of its subsidiaries is
   bound or to which any of the property or assets of the Company or any of its
   subsidiaries is subject, nor will such action result in any violation of the
   provisions of the Certificate of Formation of the Company or the limited
   liability company agreement of the Company, in each case, as in effect at the
   applicable time, the Articles of Incorporation or Bylaws of Capital, in each
   case, as in effect at the applicable time, or any statute or any order, rule
   or regulation of any court or governmental agency or body having jurisdiction
   over the Company, any of its subsidiaries or Capital or any of their
   properties; and no consent, approval, authorization, order, registration or
   qualification of or with any such court or governmental agency or body is
   required for the issue and sale of the Securities or the consummation by the
   Company or Capital of the transactions contemplated by this Agreement, the
   Registration Rights Agreement, the Pledge Agreement or the Indenture, except
   for the filing of a registration statement by the Company and Capital with
   the Securities and Exchange Commission (the "Commission") pursuant to the
   United States Securities Act of 1933, as amended (the "Act") pursuant to
   Section 5(l) hereof and such consents, approvals, authorizations,
   registrations or qualifications as may be required under state securities or
   Blue Sky laws in connection with the purchase and distribution of the
   Securities by the Purchasers;

       (j) None of the Company, any of its subsidiaries or Capital is in
   violation of its respective organizational documents, as in effect at the
   applicable time, or in default in the performance or observance of any
   material obligation, covenant or condition contained in any indenture,
   mortgage, deed of trust, loan agreement, lease or other agreement or
   instrument (including without limitation, any license, franchise, permit,
   consent or similar authorization granted to the Company, any subsidiary or
   Capital by any franchising or other governmental body) to which it is a party
   or by which it or any of its properties may be bound;

       (k) The statements set forth in the Offering Circular under the caption
   "Description of Notes", insofar as they purport to constitute a summary of
   the terms of the Securities, and under the captions "Business -- Regulatory
   Overview", "Certain United States Federal Income Tax Consequences" and "Offer
   and Resale", insofar as they purport to describe the provisions of the laws
   and documents referred to therein, are accurate and complete;

       (l) Other than as set forth in the Offering Circular, there are no legal
   or governmental proceedings pending to which the Company, any of its
   subsidiaries or Capital is a party or of which any property of the Company,
   any of its subsidiaries or Capital is the subject which, if determined
   adversely to the Company, any of its subsidiaries or Capital, would
   individually or in the aggregate have a material adverse effect on the
   current or future financial position, members' equity, shareholders' equity
   or results of operations of the Company, its subsidiaries and Capital; and,
   to the best of the Company's and Capital's knowledge, no such proceedings are
   threatened or contemplated by governmental authorities or threatened by
   others;

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       (m) When the Securities are issued and delivered pursuant to this
   Agreement, the Securities will not be of the same class (within the meaning
   of Rule 144A under the Securities Act) as securities which are listed on a
   national securities exchange registered under Section 6 of the Exchange Act
   or quoted in a U.S. automated inter-dealer quotation system;

       (n) Neither the Company nor Capital is or, after giving effect to the
   offering and sale of the Securities, will be an "investment company", or an
   entity "controlled" by an "investment company", as such terms are defined in
   the United States Investment Company Act of 1940, as amended (the "Investment
   Company Act");

       (o) None of the Company, Capital or any person acting on its or their
   behalf has offered or sold the Securities by means of any general
   solicitation or general advertising within the meaning of Rule 502(c) under
   the Act or, with respect to Securities sold outside the United States to non-
   U.S. persons (as defined in Rule 902 under the Act), by means of any directed
   selling efforts within the meaning of Rule 902 under the Securities Act and
   the Company, Capital, any affiliate of either of them and any person acting
   on its or their behalf has complied with and will implement the "offering
   restriction" within the meaning of such Rule 902; provided, however, no
   representation is made with respect to any actions that may have been taken
   by the Purchasers or any of their affiliates other than Capital, the Company,
   the Company's subsidiaries, and their respective members and officers;

       (p) Within the preceding six months, none of the Company, Capital or any
   other person acting on their behalf has offered or sold to any person any
   Securities, or any securities of the same or a similar class as the
   Securities, other than Securities offered or sold to the Purchasers
   hereunder;

       (q) None of the Company, Capital or any of their affiliates does business
   with the government of Cuba or with any person or affiliate located in Cuba
   within the meaning of Section 517.075, Florida Statutes;

       (r) Arthur Andersen LLP, who have audited certain financial statements of
   the Company and its subsidiaries, are independent public accountants as
   required by the Act and the rules and regulations of the Commission
   thereunder;

       (s) The Exchange and Registration Rights Agreement between the Company,
   Capital and the Purchasers to be dated as of April 25, 1996 (the
   "Registration Rights Agreement") has been duly authorized, and, when executed
   and delivered by the Company and Capital (assuming due authorization,
   execution and delivery by the Purchasers), will constitute a valid and
   legally binding agreement of the Company and Capital enforceable in
   accordance with its terms, subject, as to enforcement, to bankruptcy,
   insolvency, reorganization and other laws of general applicability relating
   to or affecting creditors' rights, to general equity principles and, as to
   enforcement of rights to indemnity and contribution thereunder, to
   limitations under applicable securities laws or public policy; and the
   Registration Rights Agreement will conform in all material respects to the
   description thereof in the Offering Circular;

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       (t) The Collateral Pledge and Security Agreement between the Company and 
   the Trustee to be dated as of April 25, 1996 (the "Pledge Agreement") has 
   been duly authorized, and, when executed and delivered by the Company 
   (assuming due authorization, execution and delivery by the Trustee), will 
   constitute a valid and legally binding agreement of the Company enforceable 
   in accordance with its terms, subject, as to enforcement, to bankruptcy, 
   insolvency, reorganization and other laws of general applicability relating 
   to or affecting creditors' rights, to general equity principles and, as to
   enforcement of rights to indemnity and contribution thereunder, to
   limitations under applicable securities laws or public policy; and the Pledge
   Agreement will conform in all material respects to the description thereof in
   the Offering Circular. Upon the Company's purchase of the Pledged Securities
   (as defined in the Pledge Agreement), the Company will be the sole beneficial
   owner of the Pledged Securities and no lien, encumbrance, equity or claim
   will exist upon such Pledged Securities (and no right or option to acquire
   the same will exist in favor of any other person or entity), except for the
   pledge and security interest in favor of the Trustee for the ratable benefit
   of the holders of the Securities to be created or provided for in the Pledge
   Agreement, which pledge and security interest constitute a first priority
   perfected pledge and security interest in and to all of the Pledged
   Securities.

       (u) This Agreement has been duly authorized, executed and delivered by
   the Company and Capital;

       (v) No holder of any security of the Company or Capital has or will have
   any right to require the registration of such security by virtue of any
   transactions contemplated by this Agreement, the Pledge Agreement or the
   Registration Rights Agreement other than any such right that has been
   expressly waived in writing;

       (w)  Except as set forth in or contemplated by the Offering Circular with
   respect to systems under development and the offering of dial tone service,
   each of the Company and its subsidiaries has all material certificates,
   consents, exemptions, orders, permits, licenses, authorizations, franchises
   or other material approvals (each, an "Authorization") of and from, and has
   made all material declarations and filings with, all Federal, state, local
   and other governmental authorities, all self-regulatory organizations and all
   courts and other tribunals, necessary or appropriate for the Company and its
   subsidiaries to own, lease, license, use and construct its properties and
   assets and to conduct its business in the manner described in the Offering
   Circular, except to the extent that the failure to obtain any such
   Authorizations or make any such declaration or filing would not, singularly
   or in the aggregate, reasonably be expected to have a material adverse effect
   on the current or future consolidated financial position, members' equity or
   results of operations of the Company and its subsidiaries. All such
   Authorizations are in full force and effect with respect to the Company and
   its subsidiaries; to the best knowledge of the Company, no event has occurred
   that permits, or after notice or lapse of time could permit, the revocation,
   termination or modification of any such Authorization; the Company and its
   subsidiaries are in compliance in all material respects with the terms and
   conditions of all such Authorizations and with the rules and regulations of
   the regulatory authorities and governing bodies having jurisdiction with
   respect thereto; and, except as set forth in the Offering Circular, the

                                       6

 
   Company has no knowledge that any person is contesting or intends to contest
   the granting of any material Authorization; and

       (x) Neither the execution and delivery of this Agreement, the Indenture,
   the Pledge Agreement or the Registration Rights Agreement, nor the
   consummation of the transactions contemplated hereby or thereby nor
   compliance with the terms, conditions and provisions thereof by the Company
   or Capital will cause any suspension, revocation, impairment, forfeiture,
   nonrenewal or termination of any Authorization.

   2.  Subject to the terms and conditions herein set forth, the Company and
Capital agree to issue and sell to each of the Purchasers, and each of the
Purchasers agrees, severally and not jointly, to purchase from the Company and
Capital, at a purchase price of 97.25% of the principal amount thereof, plus
accrued interest, if any, from April 25, 1996, the principal amount of
Securities set forth opposite the name of such Purchaser in Schedule I hereto.

   3.  Upon the authorization by you of the release of the Securities, the
several Purchasers propose to offer the Securities for sale upon the terms and
conditions set forth in this Agreement and the Offering Circular and each
Purchaser hereby represents and warrants to, and agrees with the Company and
Capital that:

       (a) It will offer and sell the Securities only to:  (i) persons who it
   reasonably believes are "qualified institutional buyers" ("QIBs") within the
   meaning of Rule 144A under the Act in transactions meeting the requirements
   of Rule 144A, (ii) institutions which it reasonably believes are "accredited
   investors" ("Institutional Accredited Investors") within the meaning of Rule
   501 under the Act or, (iii) upon the terms and conditions set forth in Annex
   I to this Agreement;

       (b) It is an Institutional Accredited Investor; and

       (c) It will not offer or sell the Securities by any form of general
   solicitation or general advertising, including but not limited to the methods
   described in Rule 502(c) under the Act.

   4.  (a) Except as set forth in the next paragraph, the Securities to be
purchased by each Purchaser hereunder will be represented by one or more
definitive global Securities in book-entry form which will be deposited by or on
behalf of the Company and Capital with The Depository Trust Company ("DTC") or
its designated custodian.  The Company and Capital will deliver the Securities
to Goldman, Sachs & Co., for the account of each Purchaser, against payment by
or on behalf of such Purchaser of the purchase price therefor by electronic
transfer to the order of the Company in Federal (same day) funds, by causing DTC
to credit the Securities to the account of Goldman, Sachs & Co. at DTC.  The
Company and Capital will cause the certificates representing the Securities to
be made available to Goldman, Sachs & Co. for checking at least twenty-four
hours prior to the Time of Delivery (as defined below) at the office of DTC or
its designated custodian (the "Designated Office").  The time and date of such
delivery and payment shall be 9:30 a.m., New York City time, on April 25, 1996
or

                                       7

 
such other time and date as Goldman, Sachs & Co. and the Company may agree upon
in writing.  Such time and date are herein called the "Time of Delivery".

   Such Securities, if any, as Goldman, Sachs & Co. may request upon at least
forty-eight hours' prior notice to the Company or Capital (such request to
include the authorized denominations and the names in which they are to be
registered), shall be delivered in definitive certificated form, by or on behalf
of the Company and Capital to Goldman, Sachs & Co. for the account of certain of
the Purchasers, against payment by or on behalf of such Purchaser of the
purchase price therefor by electronic transfer to the order of the Company in
Federal (same day) funds.  The Company and Capital will cause the certificates
representing the Securities to be made available for checking and packaging at
least twenty-four hours prior to the Time of Delivery at the office of Goldman,
Sachs & Co., 85 Broad Street, New York, New York 10004.

   (b) The documents to be delivered at the Time of Delivery by or on behalf of
the parties hereto pursuant to Section 7 hereof, including the cross-receipt for
the Securities and any additional documents requested by the Purchasers pursuant
to Section 7(k) hereof, will be delivered at such time and date at the offices
of Sullivan & Cromwell, 125 Broad Street, New York, New York 10004 (the "Closing
Location"), and the Securities will be delivered at the Designated Office, all
at the Time of Delivery.  A meeting will be held at the Closing Location at 2:00
p.m., New York City time, on the New York Business Day next preceding the Time
of Delivery, at which meeting the final drafts of the documents to be delivered
pursuant to the preceding sentence will be available for review by the parties
hereto.  For the purposes of this Section 4, "New York Business Day" shall mean
each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which
banking institutions in New York are generally authorized or obligated by law or
executive order to close.

   5.  The Company and Capital, jointly and severally, agree with each of the
Purchasers:

       (a) To prepare the Offering Circular in a form approved by you; to make
   no amendment or any supplement to the Offering Circular which shall be
   disapproved by you promptly after reasonable notice thereof; and to furnish
   you with copies thereof;

       (b) Promptly from time to time to take such action as you may reasonably
   request to qualify the Securities for offering and sale under the securities
   laws of such jurisdictions as you may request and to comply with such laws so
   as to permit the continuance of sales and dealings therein in such
   jurisdictions for as long as may be necessary to complete the distribution of
   the Securities, provided that in connection therewith neither the Company nor
   Capital shall be required to qualify as a foreign limited liability company
   or foreign corporation, as the case may be, or to file a general consent to
   service of process in any jurisdiction;

       (c) Prior to 10:00 a.m., New York City time, on the New York Business Day
   next succeeding the date of this Agreement and from time to time, to furnish
   the Purchasers with copies of the Offering Circular in New York City and each
   amendment or supplement thereto, together with the independent accountants'
   report(s) in the Offering Circular, and any amendment or supplement
   containing amendments to the financial

                                       8

 
   statements covered by such report(s), signed by the accountants, and
   additional copies thereof in such quantities as you may from time to time
   reasonably request, and if, at any time prior to the expiration of nine
   months after the date of the Offering Circular, any event shall have occurred
   as a result of which the Offering Circular as then amended or supplemented
   would include an untrue statement of a material fact or omit to state any
   material fact necessary in order to make the statements therein, in the light
   of the circumstances under which they were made when such Offering Circular
   is delivered, not misleading, or, if for any other reason it shall be
   necessary or desirable during such same period to amend or supplement the
   Offering Circular, to notify you and upon your request to prepare and furnish
   without charge to each Purchaser and to any dealer in securities as many
   copies as you may from time to time reasonably request of an amended Offering
   Circular or a supplement to the Offering Circular which will correct such
   statement or omission or effect such compliance;

       (d) During the period beginning from the date hereof and continuing until
   the date 90 days after the Time of Delivery, not to offer, sell, contract to
   sell or otherwise dispose of, except as provided hereunder any securities of
   the Company or Capital that are substantially similar to the Securities
   (other than as contemplated by the Registration Rights Agreement) or any
   securities of the Company or Capital convertible or exchangeable for
   securities of the Company or Capital, as the case may be, that are
   substantially similar to the Securities without the prior written consent of
   Goldman, Sachs & Co.; in addition, the Company and Capital will take
   reasonable precautions designed to insure that any offer or sale, direct or
   indirect, in the United States or to any U.S. person (as defined in Rule 902
   under the Act) of any Securities or any substantially similar security issued
   by the Company and Capital, within six months subsequent to the date on which
   the distribution of the Securities has been completed (as notified to the
   Company and Capital by Goldman, Sachs & Co.), is made under restrictions and
   other circumstances reasonably designed not to affect the status of the offer
   and sale of the Securities in the United States and to U.S. persons
   contemplated by this Agreement as transactions exempt from the registration
   provisions of the Securities Act;

       (e) Not to be or become, at any time prior to the expiration of three
   years after the Time of Delivery, an open-end investment company, unit
   investment trust, closed-end investment company or face-amount certificate
   company that is or is required to be registered under Section 8 of the
   Investment Company Act;

       (f) At any time when the Company or Capital is not subject to Section 13
   or 15(d) of the Exchange Act, for the benefit of holders from time to time of
   Securities, to furnish at its expense, upon request, to holders of Securities
   and prospective purchasers of securities information (the "Additional Issuer
   Information") satisfying the requirements of subsection (d)(4)(i) of Rule
   144A under the Act;

       (g) If requested by you, to use its reasonable best efforts to cause such
   Securities to be eligible for the PORTAL trading system of the National
   Association of Securities Dealers, Inc.;

                                       9

 
       (h) To file with the Commission, not later than 15 days after the Time of
   Delivery, five copies of a notice on Form D under the Act (one of which will
   be manually signed by a person duly authorized by the Company); to otherwise
   comply with the requirements of Rule 503 under the Act; and to furnish
   promptly to you evidence of each such required timely filing (including a
   copy thereof);

       (i) To furnish to the holders of the Securities as soon as practicable
   after the end of each fiscal year an annual report (including a consolidated
   balance sheet and consolidated statements of income, equity and cash flows of
   the Company, its consolidated subsidiaries and Capital certified by
   independent public accountants) and, as soon as practicable after the end of
   each of the first three quarters of each fiscal year (beginning with the
   fiscal quarter ending after the date of the Offering Circular), consolidated
   summary financial information of the Company, its subsidiaries and Capital
   for such quarter in reasonable detail;

       (j) During a period of five years from the date of the Offering Circular,
   to furnish to you copies of all financial reports furnished to members or
   stockholders, as applicable, and to deliver to you (i) as soon as they are
   available, copies of any reports and financial statements furnished to or
   filed with the Commission or any securities exchange on which the Securities
   or any class of securities of the Company, or Capital is listed; and (ii)
   such additional information concerning the business and financial condition
   of the Company or Capital as you may from time to time reasonably request
   (such financial statements to be on a consolidated basis to the extent the
   accounts of the Company, its subsidiaries and Capital are consolidated in
   reports furnished to its members generally or to the Commission);

       (k) During the period of three years after the Time of Delivery, neither
   the Company nor Capital will, nor will they permit any of their "affiliates"
   (as defined in Rule 144 under the Securities Act) to, resell any of the
   Securities which constitute "restricted securities" under Rule 144 that have
   been reacquired by any of them except pursuant to an effective registration
   statement under the Act;

       (l) Pursuant to the Registration Rights Agreement, the Company and
   Capital shall file on or prior to the 30th day after the Time of Delivery,
   and use their reasonable best efforts to cause to be declared or become
   effective under the Securities Act, as soon as practicable thereafter, a
   registration statement on Form S-4 providing for the registration of another
   series of debt securities of the Company and Capital, with terms identical to
   the Securities (the "Exchange Securities"), and the exchange of the
   Securities for the Exchange Securities, all in a manner which will permit
   persons who acquire the Exchange Securities to resell the Exchange Securities
   pursuant to Section 4(1) of the Securities Act; and

       (m) To use the net proceeds received by them from the sale of the
   Securities pursuant to this Agreement in the manner specified in the Offering
   Circular under the caption "Use of Proceeds".

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   6.  The Company covenants and agrees with the several Purchasers that the
Company will pay or cause to be paid the following: (i) the fees, disbursements
and expenses of the counsel and accountants of the Company and Capital in
connection with the issue of the Securities and all other expenses in connection
with the preparation, printing and filing of the Preliminary Offering Circular
and the Offering Circular and any amendments and supplements thereto and the
mailing and delivering of copies thereof to the Purchasers and dealers; (ii) the
cost of printing or producing any Agreement among Purchasers, this Agreement,
the Indenture, the Registration Rights Agreement, the Pledge Agreement, the Blue
Sky and Legal Investment Memoranda, closing documents (including any
compilations thereof) and any other documents in connection with the offering,
purchase, sale and delivery of the Securities; (iii) all expenses in connection
with the qualification of the Securities for offering and sale under state
securities laws as provided in Section 5(b) hereof, including the fees and
disbursements of counsel for the Purchasers in connection with such
qualification and in connection with the Blue Sky and legal investment surveys;
(iv) any fees charged by securities rating services for rating the Securities;
(v) the cost of preparing the Securities; (vi) the fees and expenses of the
Trustee and any agent of the Trustee and the fees and disbursements of counsel
for the Trustee in connection with the Indenture and the Securities; (vii) any
cost incurred in connection with the designation of the Securities for trading
in PORTAL; and (viii) all other costs and expenses incident to the performance
of its obligations hereunder which are not otherwise specifically provided for
in this Section.  It is understood, however, that, except as provided in this
Section, and Sections 8 and 11 hereof, the Purchasers will pay all of their own
costs and expenses, including the fees of their counsel, transfer taxes on
resale of any of the Securities by them, and any advertising expenses connected
with any offers they may make. The Purchasers have also agreed to reimburse the
Company for certain of its expenses incurred in connection with the transactions
contemplated by this Agreement, in an aggregate amount of $625,000.

   7.  The obligations of the Purchasers hereunder shall be subject, in their
discretion, to the condition that all representations and warranties and other
statements of the Company and Capital herein are, at and as of the Time of
Delivery, true and correct, the condition that the Company and Capital shall
have performed all of its obligations hereunder theretofore to be performed, and
the following additional conditions:

       (a) Sullivan & Cromwell, counsel for the Purchasers, shall have furnished
   to you such opinion or opinions, dated the Time of Delivery, with respect to
   the formation of the Company, the incorporation of Capital, the validity of
   the Indenture, the Securities, the Pledge Agreement and the Registration
   Rights Agreement, the Offering Circular, and such other related matters as
   you may reasonably request, and such counsel shall have received such papers
   and information as they may reasonably request to enable them to pass upon
   such matters;

       (b) Willkie Farr & Gallagher, counsel for the Company and Capital, shall
   have furnished to you their written opinion, dated the Time of Delivery, in
   form and substance satisfactory to you, to the effect that:

                                       11

 
           (i)    The Company has been duly formed and is validly existing as a
   limited liability company under the laws of the State of Washington, with
   power and authority to own its properties and conduct its business as
   described in the Offering Circular;

           (ii)   Capital has been duly incorporated and is validly existing as
   a corporation under the laws of the State of Washington with corporate power
   and authority to conduct its business as described in the Offering Circular;

           (iii)  The Company and Capital have an authorized capitalization as
   set forth in the Offering Circular, and all of the issued membership
   interests of the Company have been duly and validly authorized and issued,
   and all of the issued shares of capital stock of Capital have been duly and
   validly authorized and issued and are fully paid and non-assessable; all of
   the outstanding shares of capital stock of Capital owned by the Company are
   owned free and clear of all liens, encumbrances, equities or claims (except
   as otherwise set forth in the Offering Circular);

           (iv)   The Company has been duly qualified as a foreign limited
   liability company for the transaction of business under the laws of each
   other jurisdiction in which it owns or leases properties or conducts any
   business so as to require such qualification, or is subject to no material
   liability or disability by reason of the failure to be so qualified in any
   such jurisdiction;

           (v)    Capital has been duly qualified as a foreign corporation for
   the transaction of business under the laws of each other jurisdiction in
   which it conducts any business so as to require such qualification, or is
   subject to no material liability or disability by reason of the failure to be
   so qualified in any such jurisdiction;

           (vi)   The Company will be classified for United States federal
   income tax purposes as a partnership within the meaning of Section 7701(a)(2)
   of the Internal Revenue Code of 1986, as amended;

           (vii)  Each subsidiary of the Company has been duly formed and is
   validly existing as a limited liability company or limited partnership under
   the laws of its jurisdiction of formation; and all of the issued membership
   interests or partnership interests of each such subsidiary have been duly and
   validly authorized and issued, and (except as otherwise set forth in the
   Offering Circular in respect of the minority interests described therein) are
   owned directly or indirectly by the Company, free and clear of all liens,
   encumbrances, equities or claims;

           (viii) This Agreement has been duly authorized, executed and
   delivered by the Company and Capital;

           (ix)   The Securities have been duly and validly authorized and
   executed by the Company and Capital and, assuming due authentication of the
   Securities by the Trustee, upon delivery to the Purchasers against payment
   therefor in accordance with the terms of this Agreement, will have been
   validly issued and delivered and will constitute valid and legally binding
   obligations of the Company and Capital entitled to the benefits

                                       12

 
   provided by the Indenture, subject, as to enforcement, to bankruptcy,
   insolvency, reorganization and other laws of general applicability relating
   or affecting creditors' rights and to general equity principles; and the
   Securities and the Indenture conform in all material respects to the
   descriptions thereof in the Offering Circular;

           (x)    The Registration Rights Agreement has been duly authorized,
   executed and delivered by the Company, Capital and, assuming due
   authorization, execution and delivery by the Purchasers, constitutes a valid
   and legally binding obligation of the Company and Capital enforceable in
   accordance with its terms, subject, as to enforcement, to bankruptcy,
   insolvency, reorganization and other laws of general applicability relating
   to or affecting creditors' rights and to general equity principles and, as to
   enforcement of rights to indemnity and contribution thereunder, to
   limitations under applicable securities laws or public policy; and the
   Registration Rights Agreement conforms in all material respects to the
   summary thereof in the Offering Circular;

           (xi)   The Indenture has been duly authorized, executed and delivered
   by the Company and Capital and, assuming due execution and delivery by the
   Trustee, constitutes a valid and legally binding instrument, enforceable in
   accordance with its terms, subject, as to enforcement, to bankruptcy,
   insolvency, reorganization and other laws of general applicability relating
   to or affecting creditors' rights and to general equity principles;

           (xii)  The Pledge Agreement has been duly authorized, executed and
   delivered by the Company, Capital and, assuming due authorization, execution
   and delivery by the Trustee, constitutes a valid and legally binding
   obligation of the Company and Capital enforceable in accordance with its
   terms, subject, as to enforcement, to bankruptcy, insolvency, reorganization
   and other laws of general applicability relating to or affecting creditors'
   rights and to general equity principles and, as to enforcement of rights to
   indemnity and contribution thereunder, to limitations under applicable
   securities laws or public policy; and the Pledge Agreement conforms in all
   material respects to the summary thereof in the Offering Circular, without
   expressing any opinion as to the priority of the security interest created
   under the Pledge Agreement;

           (xiii) The issue and sale of the Securities and the compliance by
   the Company and Capital with all of the provisions of the Securities, the
   Indenture, the Registration Rights Agreement, the Pledge Agreement and this
   Agreement and the consummation of the transactions herein and therein
   contemplated will not conflict with or result in a breach or violation of any
   of the terms or provisions of, or constitute a default under, any indenture,
   mortgage, deed of trust, loan agreement or other agreement or instrument
   known to such counsel to which the Company, any of its subsidiaries or
   Capital is a party or by which the Company, any of its subsidiaries or
   Capital is bound or to which any of the property or assets of the Company or
   any of its subsidiaries is subject, nor will such actions result in any
   violation of the provisions of the Certificate of Formation of the Company or
   the limited liability company agreement of the Company, in each case, as in
   effect at the applicable time, or the Articles of Incorporation or Bylaws of
   Capital, in each case, as in effect at the applicable time, or any order,
   rule or regulation, known to such counsel to be applicable to the Company

                                       13

 
   or Capital and any of their respective subsidiaries or properties, of any
   court or governmental agency or body having jurisdiction over the Company,
   any of its subsidiaries or Capital or any of their properties;

           (xiv)    To the best of such counsel's knowledge, no consent,
   approval, authorization, order, registration or qualification of or with any
   such court or governmental agency or body is required for the issue and sale
   of the Securities, the consummation by the Company and Capital of the
   transactions contemplated by this Agreement, the Indenture, the Pledge
   Agreement or the Registration Rights Agreement, except such consents,
   approvals, authorizations, registrations or qualifications as may be required
   under state securities or Blue Sky laws in connection with the purchase and
   distribution of the Securities by the Purchasers, and such consents,
   approvals, authorizations, orders, registrations and qualifications as may be
   required under the Act, the United States Trust Indenture Act of 1939 (the
   "Trust Indenture Act") and state or foreign securities or Blue Sky laws in
   connection with the filing of a registration statement by the Company and
   Capital with the Commission pursuant to the Act in accordance with Section
   5(l) hereof and the exchange offer or resale registration contemplated by the
   Registration Rights Agreement described in the Offering Circular;

           (xv)     The statements set forth in the Offering Circular under the
   caption "Description of Notes", insofar as they purport to constitute a
   summary of the terms of the Securities, and under the captions "Business --
   Regulatory Overview", "Certain United States Federal Income Tax Consequences"
   and "Offer and Resale", insofar as they purport to describe the provisions of
   the laws and documents referred to therein, are accurate and complete;

           (xvi)    No registration of the Securities under the Act, and no
   qualification of an indenture under the Trust Indenture Act with respect
   thereto, is required for the offer, sale and initial resale of the Securities
   by the Purchasers in the manner contemplated by this Agreement;

           (xvii)   Neither the Company nor Capital is or, after giving effect
   to the offering contemplated hereby, will be, an "investment company" or an
   entity "controlled" by an "investment company", as such terms are defined in
   the Investment Company Act;

           (xviii)  The provisions of the Pledge Agreement are effective to
   create in favor of the Trustee for the benefit of the holders of Securities
   the security interest purported to be created therein in all right, title and
   interest of the Issuers in and to Pledged Securities that from time to time
   are transferred to the Trustee on behalf of the holders of Securities and the
   proceeds thereof received from time to time by the Trustee; and

           (xix)    The security interest of the Trustee in the Pledged
   Securities, initially consisting of Government Securities (as defined in the
   Indenture), created pursuant to the Pledge Agreement, upon transfer of such
   Pledged Securities to the Trustee for the benefit of the holders of
   Securities, will be a perfected security interest.

                                       14

 
   Such counsel shall also state that they have no reason to believe that the
Offering Circular and any further amendments or supplements thereto made by the
Company and Capital prior to the Time of Delivery (other than the financial
statements therein, as to which such counsel need express no opinion) contained
as of its date or contains as of the Time of Delivery an untrue statement of a
material fact or omitted or omits, as the case may be, to state a material fact
necessary to make the statements therein, in the light of the circumstances
under which they were made, not misleading.  Such counsel will be entitled to
rely as to matters of Washington law upon opinions of local counsel and in
respect of matters of fact upon certificates of officers of the Company,
provided that such counsel shall state that they believe that both you and they
are justified in relying upon such opinions and certificates.

       (c) R. Bruce Easter, Esq., Vice President, General Counsel and Secretary
   of the Company, shall have furnished to you his written opinion, dated the
   Time of Delivery, in form and substance satisfactory to you, to the effect
   that:

           (i)    The Company has the power and authority to own its properties
   and conduct its business as described in the Offering Circular;

           (ii)   Capital has the corporate power and authority to conduct its
   business as described in the Offering Circular;

           (iii)  The Company and Capital have an authorized capitalization as
   set forth in the Offering Circular, and all of the issued membership
   interests of the Company and all of the issued shares of capital stock of
   Capital have been duly and validly authorized and issued and are fully paid
   and non-assessable; all of the outstanding shares of capital stock of Capital
   owned by the Company are owned free and clear of all liens, encumbrances,
   equities or claims (except as otherwise set forth in the Offering Circular);

           (iv)   The Company has been duly qualified as a foreign limited
   liability company for the transaction of business under the laws of each
   other jurisdiction in which it owns or leases properties or conducts any
   business so as to require such qualification, or is subject to no material
   liability or disability by reason of the failure to be so qualified in any
   such jurisdiction (such counsel being entitled to rely in respect of the
   opinion in this clause upon opinions of local counsel and in respect of
   matters of fact upon certificates of officers of the Company, provided that
   such counsel shall state that he believes that both you and he are justified
   in relying upon such opinions and certificates);

           (v)    Capital has been duly qualified as a foreign corporation for
   the transaction of business under the laws of each other jurisdiction in
   which it conducts any business so as to require such qualification, or is
   subject to no material liability or disability by reason of the failure to be
   so qualified in any such jurisdiction (such counsel being entitled to rely in
   respect of the opinion in this clause upon opinions of local counsel and in
   respect of matters of fact upon certificates of officers of Capital, provided
   that such counsel shall state that he believes that both you and he are
   justified in relying upon such opinions and certificates);

                                       15

 
           (vi)    Each subsidiary of the Company has been duly formed and is
   validly existing as a limited liability company or a limited partnership
   under the laws of its jurisdiction of formation and has been duly qualified
   as a foreign limited liability company or a foreign limited partnership for
   the transaction of business under the laws of each other jurisdiction in
   which it owns or leases properties or conducts any business so as to require
   such qualification, or is subject to no material liability or disability by
   reason of the failure to be so qualified in any such jurisdiction ; and all
   of the issued membership interests of each such subsidiary have been duly and
   validly authorized and issued, are fully paid and non-assessable, and (except
   as otherwise set forth in the Offering Circular in respect of the minority
   interests described therein) are owned directly or indirectly by the Company,
   free and clear of all liens, encumbrances, equities or claims (such counsel
   being entitled to rely in respect of the opinion in this clause upon opinions
   of local counsel and in respect of matters of fact upon certificates of
   officers of the Company or its subsidiaries, provided that such counsel shall
   state that they believe that both you and they are justified in relying upon
   such opinions and certificates);

           (vii)   To the best of such counsel's knowledge and other than as set
   forth in the Offering Circular, there are no legal or governmental
   proceedings pending to which the Company, any of its subsidiaries or Capital
   is a party or of which any property of the Company, any of its subsidiaries
   or Capital is the subject which, if determined adversely to the Company, any
   of its subsidiaries or Capital, would individually or in the aggregate have a
   material adverse effect on the consolidated financial position, members'
   equity, shareholders' equity, results of operations or general affairs of the
   Company, its subsidiaries or Capital; and, to the best of such counsel's
   knowledge, no such proceedings are threatened or contemplated by governmental
   authorities or threatened by others;

           (viii)  To the best knowledge of such counsel and except as set forth
   in or contemplated by the Offering Circular with respect to systems under
   development, (a) each of the Company and its subsidiaries has all
   Authorizations of and from, and has made all declarations and filings with,
   all Federal, state, local and other governmental authorities, all self-
   regulatory organizations and all courts and other tribunals, which are
   necessary or appropriate for the Company and its subsidiaries to own, lease,
   license, use and construct its properties and assets and to conduct its
   business in the manner described in the Offering Circular, except to the
   extent that the failure to obtain any such Authorizations or make any such
   declaration or filing would not, singularly or in the aggregate, reasonably
   be expected to have a material adverse effect on the consolidated financial
   position, members' equity, shareholders' equity, results of operations or
   general affairs of the Company or its subsidiaries, (b) all such
   Authorizations are in full force and effect with respect to the Company and
   its subsidiaries, (c) no event has occurred that permits, or after notice or
   lapse of time could permit, the revocation, termination or modification of
   any such Authorization and (d) the Company and its subsidiaries are in
   compliance in all material respects with the terms and conditions of all such
   Authorizations and with the rules and regulations of the regulatory
   authorities and governing bodies having jurisdiction with respect thereto;

                                       16

 
           (ix)   To the best knowledge of such counsel, neither the execution
   and delivery of this Agreement, the Indenture, the Pledge Agreement or the
   Registration Rights Agreement, the issuance and sale of the Securities by the
   Company and Capital to the Purchasers, nor the consummation by the Company
   and Capital of the transactions contemplated hereby or thereby nor compliance
   with the terms, conditions and provisions thereof by the Company or Capital
   will cause any suspension, revocation, impairment, forfeiture, nonrenewal or
   termination of any Authorization; and

           (x)    The statements set forth in the Offering Circular under the
   caption "Business -- Regulatory Overview", insofar as they purport to
   describe certain of the provisions of the laws, legal proceedings and
   documents referred to therein, are accurate summaries of such provisions in
   all material respects.

       (d)   Davis Wright Tremaine, special Washington counsel for the Company
   and Capital, shall have furnished to you their written opinion, dated the
   Time of Delivery, in form and substance satisfactory to you, to the effect
   that:

       (i)   the Company has been duly formed and is validly existing as a
   limited liability company under the laws of the State of Washington;

       (ii)  Capital has been duly incorporated and is an existing corporation
   under the laws of the State of Washington;

       (iii) each of the Indenture, this Agreement, the Pledge Agreement and
   the Registration Rights Agreement has been duly authorized, executed and
   delivered by the Company and Capital;

       (iv)  the Securities have been duly authorized, executed, issued and
   delivered by the Company and Capital;

       (v)   the execution and delivery of the Securities, the Indenture, this
   Agreement, the Pledge Agreement and the Registration Rights Agreement do not
   and will not conflict with, contravene or result in a breach of the Company's
   current Amended and Restated Limited Liability Company Agreement or its
   Certificate of Formation;

       (vi)  the execution and delivery of the Securities, the Indenture, this
   Agreement, the Pledge Agreement and the Registration Rights Agreement do not
   and will not conflict with, contravene or result in a breach of Capital's
   Articles of Incorporation or Bylaws; and

       (vii) no consent, authorization, approval, order, registration or other
   action by, and no notice to or filing with, any governmental authority or
   regulatory body of the State of Washington is required for the due execution
   and delivery by the Company or Capital of the Indenture, this Agreement, the
   Pledge Agreement and the Registration Rights Agreement, nor for the due
   execution, issue and delivery of the Securities, except such consents,
   approvals, authorizations, registrations or qualifications as may be required

                                       17

 
   under securities or Blue Sky laws of the State of Washington in connection
   with the purchase and distribution of the Securities by the Purchasers.

       (e) On the date of the Offering Circular prior to the execution of this
   Agreement and also at the Time of Delivery, Arthur Andersen LLP shall have
   furnished to you a letter or letters, dated the respective dates of delivery
   thereof, in form and substance satisfactory to you, to the effect set forth
   in Annex II hereto;

       (f) (i) None of the Company, any of its subsidiaries or Capital shall
   have sustained since the date of the latest audited financial statements
   included in the Offering Circular any loss or interference with its business
   from fire, explosion, flood or other calamity, whether or not covered by
   insurance, or from any labor dispute or court or governmental action, order
   or decree, otherwise than as set forth or contemplated in the Offering
   Circular, and (ii) since the respective dates as of which information is
   given in the Offering Circular there shall not have been any change in the
   aggregate level of membership interests, partnership interests or long-term
   debt of the Company or any of its subsidiaries, or in the capital stock or
   long-term debt of Capital, or any change, or any development involving a
   prospective change, in or affecting the general affairs, management,
   financial position, members' equity, shareholders' equity or results of
   operations of the Company, its subsidiaries and Capital, otherwise than as
   set forth or contemplated in the Offering Circular, the effect of which, in
   any such case described in Clause (i) or (ii), is in the judgment of the
   Purchasers so material and adverse as to make it impracticable or inadvisable
   to proceed with the offering or the delivery of the Securities on the terms
   and in the manner contemplated in this Agreement and in the Offering
   Circular;

       (g) On or after the date hereof (i) no downgrading shall have occurred in
   the rating accorded the debt securities of the Company and Capital by any
   "nationally recognized statistical rating organization", as that term is
   defined by the Commission for purposes of Rule 436(g)(2) under the Act, and
   (ii) no such organization shall have publicly announced that it has under
   surveillance or review, with possible negative implications, its rating of
   any of the debt securities of the Company and Capital;

       (h) On or after the date hereof there shall not have occurred any of the
   following: (i) a suspension or material limitation in trading in securities
   generally on the New York Stock Exchange; (ii) a general moratorium on
   commercial banking activities declared by either Federal or New York State
   authorities; (iii) the outbreak or escalation of hostilities involving the
   United States or the declaration by the United States of a national emergency
   or war, if the effect of any such event specified in this Clause (iii) in the
   judgment of the Purchasers makes it impracticable or inadvisable to proceed
   with the public offering or the delivery of the Securities on the terms and
   in the manner contemplated in the Offering Circular; or (iv) the occurrence
   of any material adverse change in the existing, financial, political or
   economic conditions in the United States or elsewhere which, in the judgment
   of the Purchasers, would materially and adversely affect the financial
   markets for the Securities and other debt securities;

       (i)  The Securities shall have been designated for trading on PORTAL;

                                       18

 
       (j)  The Registration Rights Agreement shall have been duly authorized,
   executed and delivered by the Company and Capital;

       (k)  The Pledge Agreement shall have been duly authorized, executed and
   delivered by the Company and Capital; and

       (l)  The Company and Capital shall have furnished or caused to be
   furnished to you at the Time of Delivery certificates of officers of the
   Company and Capital satisfactory to you as to the accuracy of the
   representations and warranties of the Company and Capital herein at and as of
   such Time of Delivery, as to the performance by the Company and Capital of
   all of their obligations hereunder to be performed at or prior to such Time
   of Delivery, as to the matters set forth in subsections (a) and (f) of this
   Section and as to such other matters as you may reasonably request.

   8.  (a)  The Company and Capital, jointly and severally, will indemnify and
hold harmless each Purchaser against any losses, claims, damages or liabilities,
joint or several, to which such Purchaser may become subject, under the Act or
otherwise, insofar as such losses, claims, damages or liabilities (or actions in
respect thereof) arise out of or are based upon an untrue statement or alleged
untrue statement of a material fact contained in any Preliminary Offering
Circular or the Offering Circular, or any amendment or supplement thereto, or
arise out of or are based upon the omission or alleged omission to state therein
a material fact necessary to make the statements therein not misleading, and
will reimburse each Purchaser for any legal or other expenses reasonably
incurred by such Purchaser in connection with investigating or defending any
such action or claim as such expenses are incurred; provided, however, that
neither the Company nor Capital shall be liable in any such case to the extent
that any such loss, claim, damage or liability arises out of or is based upon an
untrue statement or alleged untrue statement or omission or alleged omission
made in any Preliminary Offering Circular or the Offering Circular or any such
amendment or supplement in reliance upon and in conformity with written
information furnished to the Company or Capital by any Purchaser through
Goldman, Sachs & Co. expressly for use therein.

       (b)  Each Purchaser will indemnify and hold harmless the Company and
Capital against any losses, claims, damages or liabilities to which the Company
or Capital may become subject, under the Act or otherwise, insofar as such
losses, claims, damages or liabilities (or actions in respect thereof) arise out
of or are based upon an untrue statement or alleged untrue statement of a
material fact contained in any Preliminary Offering Circular or the Offering
Circular, or any amendment or supplement thereto, or arise out of or are based
upon the omission or alleged omission to state therein a material fact or
necessary to make the statements therein not misleading, in each case to the
extent, but only to the extent, that such untrue statement or alleged untrue
statement or omission or alleged omission was made in any Preliminary Offering
Circular or the Offering Circular or any such amendment or supplement in
reliance upon and in conformity with written information furnished to the
Company or Capital by such Purchaser through Goldman, Sachs & Co. expressly for
use therein; and will reimburse the Company and Capital, for any legal or other
expenses reasonably incurred by them in connection with investigating or
defending any such action or claim as such expenses are incurred.

                                       19

 
       (c)  Promptly after receipt by an indemnified party under subsection (a)
or (b) above of notice of the commencement of any action, such indemnified party
shall, if a claim in respect thereof is to be made against the indemnifying
party under such subsection, notify the indemnifying party in writing of the
commencement thereof; but the omission so to notify the indemnifying party shall
not relieve it from any liability which it may have to any indemnified party
otherwise than under such subsection.  In case any such action shall be brought
against any indemnified party and it shall notify the indemnifying party of the
commencement thereof, the indemnifying party shall be entitled to participate
therein and, to the extent that it shall wish, jointly with any other
indemnifying party similarly notified, to assume the defense thereof, with
counsel satisfactory to such indemnified party (who shall not, except with the
consent of the indemnified party, be counsel to the indemnifying party), and,
after notice from the indemnifying party to such indemnified party of its
election so to assume the defense thereof, the indemnifying party shall not be
liable to such indemnified party under such subsection for any legal expenses of
other counsel or any other expenses, in each case subsequently incurred by such
indemnified party, in connection with the defense thereof other than reasonable
costs of investigation.  No indemnifying party shall, without the written
consent of the indemnified party, effect the settlement or compromise of, or
consent to the entry of any judgment with respect to, any pending or threatened
action or claim in respect of which indemnification or contribution may be
sought hereunder (whether or not the indemnified party is an actual or potential
party to such action or claim) unless such settlement, compromise or judgment
(i) includes an unconditional release of the indemnified party from all
liability arising out of such action or claim and (ii) does not include a
statement as to, or an admission of, fault, culpability or a failure to act, by
or on behalf of any indemnified party.

       (d)  If the indemnification provided for in this Section 8 is unavailable
to or insufficient to hold harmless an indemnified party under subsection (a) or
(b) above in respect of any losses, claims, damages or liabilities (or actions
in respect thereof) referred to therein, then each indemnifying party shall
contribute to the amount paid or payable by such indemnified party as a result
of such losses, claims, damages or liabilities (or actions in respect thereof)
in such proportion as is appropriate to reflect the relative benefits received
by the Company and Capital on the one hand and the Purchasers on the other from
the offering of the Securities.  If, however, the allocation provided by the
immediately preceding sentence is not permitted by applicable law or if the
indemnified party failed to give the notice required under subsection (c) above,
then each indemnifying party shall contribute to such amount paid or payable by
such indemnified party in such proportion as is appropriate to reflect not only
such relative benefits but also the relative fault of the Company and Capital on
the one hand and the Purchasers on the other in connection with the statements
or omissions which resulted in such losses, claims, damages or liabilities (or
actions in respect thereof), as well as any other relevant equitable
considerations.  The relative benefits received by the Company and Capital on
the one hand and the Purchasers on the other shall be deemed to be in the same
proportion as the total net proceeds from the offering (before deducting
expenses) received by the Company and Capital (considered as one party for this
purpose) bear to the total underwriting discounts and commissions received by
the Purchasers, in each case as set forth in the Offering Circular.  The
relative fault shall be determined by reference to, among other things, whether
the untrue or alleged untrue statement of a material fact or the omission or
alleged omission to state a material fact relates to information supplied by the

                                       20

 
Company and Capital on the one hand or the Purchasers on the other and the
parties' relative intent, knowledge, access to information and opportunity to
correct or prevent such statement or omission.  The Company, Capital and the
Purchasers agree that it would not be just and equitable if contribution
pursuant to this subsection (d) were determined by pro rata allocation (even if
the Purchasers were treated as one entity for such purpose) or by any other
method of allocation which does not take account of the equitable considerations
referred to above in this subsection (d).  The amount paid or payable by an
indemnified party as a result of the losses, claims, damages or liabilities (or
actions in respect thereof) referred to above in this subsection (d) shall be
deemed to include any legal or other expenses reasonably incurred by such
indemnified party in connection with investigating or defending any such action
or claim. Notwithstanding the provisions of this subsection (d), no Purchaser
shall be required to contribute any amount in excess of the amount by which the
total price at which the Securities underwritten by it and distributed to
investors were offered to investors exceeds the amount of any damages which such
Purchaser has otherwise been required to pay by reason of such untrue or alleged
untrue statement or omission or alleged omission. The Purchasers' obligations in
this subsection (d) to contribute are several in proportion to their respective
underwriting obligations and not joint.

       (e)  The obligations of the Company and Capital under this Section 8
shall be in addition to any liability which the Company and Capital may
otherwise have and shall extend, upon the same terms and conditions, to each
person, if any, who controls any Purchaser within the meaning of the Act; and
the obligations of the Purchasers under this Section 8 shall be in addition to
any liability which the respective Purchasers may otherwise have and shall
extend, upon the same terms and conditions, to each officer and director of the
Company or Capital and to each person, if any, who controls the Company or
Capital within the meaning of the Act.

   9.  (a)  If any Purchaser shall default in its obligation to purchase the
Securities which it has agreed to purchase hereunder, you may in your discretion
arrange for you or another party or other parties to purchase such Securities on
the terms contained herein.  If within thirty-six hours after such default by
any Purchaser you do not arrange for the purchase of such Securities, then the
Company and Capital shall be entitled to a further period of thirty-six hours
within which to procure another party or other parties satisfactory to you to
purchase such Securities on such terms.  In the event that, within the
respective prescribed periods, you notify the Company or Capital that you have
so arranged for the purchase of such Securities, or the Company or Capital
notifies you that it has so arranged for the purchase of such Securities, you,
the Company or Capital shall have the right to postpone the Time of Delivery for
a period of not more than seven days, in order to effect whatever changes may
thereby be made necessary in the Offering Circular, or in any other documents or
arrangements, and the Company and Capital agree to prepare promptly any
amendments to the Offering Circular which in your opinion may thereby be made
necessary.  The term "Purchaser" as used in this Agreement shall include any
person substituted under this Section with like effect as if such person had
originally been a party to this Agreement with respect to such Securities.

       (b)  If, after giving effect to any arrangements for the purchase of the
Securities of a defaulting Purchaser or Purchasers by you and the Company or
Capital as provided in

                                       21

 
subsection (a) above, the aggregate principal amount of such Securities which
remains unpurchased does not exceed one-eleventh of the aggregate principal
amount of all the Securities, then the Company and Capital shall have the right
to require each non-defaulting Purchaser to purchase the principal amount of
Securities which such Purchaser agreed to purchase hereunder and, in addition,
to require each non-defaulting Purchaser to purchase its pro rata share (based
on the principal amount of Securities which such Purchaser agreed to purchase
hereunder) of the Securities of such defaulting Purchaser or Purchasers for
which such arrangements have not been made; but nothing herein shall relieve a
defaulting Purchaser from liability for its default.

       (c)  If, after giving effect to any arrangements for the purchase of the
Securities of a defaulting Purchaser or Purchasers by you and the Company or
Capital as provided in subsection (a) above, the aggregate principal amount of
Securities which remains unpurchased exceeds one-eleventh of the aggregate
principal amount of all the Securities, or if neither the Company nor Capital
exercises the right described in subsection (b) above to require non-defaulting
Purchasers to purchase Securities of a defaulting Purchaser or Purchasers, then
this Agreement shall thereupon terminate, without liability on the part of any
non-defaulting Purchaser, the Company or Capital, except for the expenses to be
borne by the Company, Capital and the Purchasers as provided in Section 6 hereof
and the indemnity and contribution agreements in Section 8 hereof; but nothing
herein shall relieve a defaulting Purchaser from liability for its default.

   10. The respective indemnities, agreements, representations, warranties and
other statements of the Company, Capital and the several Purchasers, as set
forth in this Agreement or made by or on behalf of them, respectively, pursuant
to this Agreement, shall remain in full force and effect, regardless of any
investigation (or any statement as to the results thereof) made by or on behalf
of any Purchaser or any controlling person of any Purchaser, or the Company,
Capital, or any officer or director or controlling person of the Company or
Capital, and shall survive delivery of and payment for the Securities.

   11. If this Agreement shall be terminated pursuant to Section 9 hereof,
neither the Company nor Capital shall then be under any liability to any
Purchaser except as provided in Sections 6 and 8 hereof; but, if for any other
reason, the Securities are not delivered by or on behalf of the Company and
Capital as provided herein, the Company and Capital will reimburse the
Purchasers through you for all out-of-pocket expenses approved in writing by
you, including fees and disbursements of counsel, reasonably incurred by the
Purchasers in making preparations for the purchase, sale and delivery of the
Securities, but the Company and Capital shall then be under no further liability
to any Purchaser except as provided in Sections 6 and 8 hereof.

   12. In all dealings hereunder, you shall act on behalf of each of the
Purchasers, and the parties hereto shall be entitled to act and rely upon any
statement, request, notice or agreement on behalf of any Purchaser made or given
by you jointly or by Goldman, Sachs & Co. on behalf of you as the
representative.

   All statements, requests, notices and agreements hereunder shall be in
writing, and if to the Purchasers shall be delivered or sent by mail, telex or
facsimile transmission to you as

                                       22

 
the representatives in care of Goldman, Sachs & Co., 85 Broad Street, New York,
New York 10004, Attention: Registration Department; and if to the Company or
Capital shall be delivered or sent by mail, telex or facsimile transmission to
the address of the Company set forth in the Offering Circular, Attention:
Secretary; provided, however, that any notice to a Purchaser pursuant to Section
8(c) hereof shall be delivered or sent by mail, telex or facsimile transmission
to such Purchaser at its address set forth in its Purchasers' Questionnaire, or
telex constituting such Questionnaire, which address will be supplied to the
Company by you upon request.  Any such statements, requests, notices or
agreements shall take effect upon receipt thereof.

   13. This Agreement shall be binding upon, and inure solely to the benefit of,
the Purchasers, the Company, Capital and, to the extent provided in Sections 8
and 10 hereof, the officers and directors of the Company and each person who
controls the Company, Capital or any Purchaser, and their respective heirs,
executors, administrators, successors and assigns, and no other person shall
acquire or have any right under or by virtue of this Agreement. No purchaser of
any of the Securities from any Purchaser shall be deemed a successor or assign
by reason merely of such purchase.

   14. Time shall be of the essence of this Agreement.

   15. This Agreement shall be governed by and construed in accordance with the
laws of the State of New York.

   16. This Agreement may be executed by any one or more of the parties hereto
in any number of counterparts, each of which shall be deemed to be an original,
but all such respective counterparts shall together constitute one and the same
instrument.

                                       23

 
   If the foregoing is in accordance with your understanding, please sign and
return to us  counterparts hereof, and upon the acceptance hereof by you, on
behalf of each of the Purchasers, this letter and such acceptance hereof shall
constitute a binding agreement between each of the Purchasers, the Company and
Capital. It is understood that your acceptance of this letter on behalf of each
of the Purchasers is pursuant to the authority set forth in a form of Agreement
among Purchasers, the form of which shall be submitted to the Company and
Capital for examination upon request, but without warranty on your part as to
the authority of the signers thereof.

                                         Very truly yours,

                                         NEXTLINK Communications, L.L.C.

                                         By: NEXTLINK, Inc.

                                         By: /s/ R. Bruce Easter, Jr.
                                             ------------------------
                                            Name:  R. Bruce Easter, Jr.
                                            Title:  Vice President


                                         NEXTLINK Capital, Inc.

                                         By: /s/ R. Bruce Easter, Jr.
                                             ------------------------
                                            Name:  R. Bruce Easter, Jr.
                                            Title:  Vice President



Accepted as of the date hereof:

Goldman, Sachs & Co.
Bear, Stearns & Co. Inc.
Salomon Brothers Inc
Toronto Dominion Securities (USA) Inc.

By: /s/ Goldman, Sachs & Co.
    ------------------------
   (Goldman, Sachs & Co.)

                                       24

 


                                  SCHEDULE I

                                                                     Principal
                                                                     Amount of
                                                                     Securities
                                                                       to be  
                                  Purchaser                          Purchased
                                  ---------                          ---------  
                                                                   
 
Goldman, Sachs & Co...............................................  $199,500,000
Bear, Stearns & Co. Inc...........................................    73,500,000
Salomon Brothers Inc..............................................    56,000,000
Toronto Dominion Securities (USA) Inc.............................    21,000,000
                                       
   Total..........................................................  $350,000,000


                                       25

 
                                                                         ANNEX I
  (1) The Securities have not been and will not be registered under the Act and
may not be offered or sold within the United States or to, or for the account or
benefit of, U.S. persons except in accordance with Regulation S under the Act or
pursuant to an exemption from the registration requirements of the Act.  Each
Purchaser represents that it has offered and sold the Securities, and will offer
and sell the Securities (i) as part of their distribution at any time and (ii)
otherwise until 40 days after the later of the commencement of the offering and
the Time of Delivery, only in accordance with Rule 903 of Regulation S or Rule
144A under the Act.  Accordingly, each Purchaser agrees that neither it, its
affiliates nor any persons acting on its or their behalf has engaged or will
engage in any directed selling efforts with respect to the Securities, and it
and they have complied and will comply with the offering restrictions
requirement of Regulation S.  Each Purchaser agrees that, at or prior to
confirmation of sale of Securities (other than a sale pursuant to Rule 144A), it
will have sent to each distributor, dealer or person receiving a selling
concession, fee or other remuneration that purchases Securities from it during
the restricted period a confirmation or notice to substantially the following
effect:

      "The Securities covered hereby have not been registered under the U.S.
   Securities Act of 1933 (the "Securities Act") and may not be offered and sold
   within the United States or to, or for the account or benefit of, U.S.
   persons (i) as part of their distribution at any time or (ii) otherwise until
   40 days after the later of the commencement of the offering and the closing
   date, except in either case in accordance with Regulation S (or Rule 144A if
   available) under the Securities Act.  Terms used above have the meaning given
   to them by Regulation S."

Terms used in this paragraph have the meanings given to them by Regulation S.

  Each Purchaser further agrees that it has not entered and will not enter into
any contractual arrangement with respect to the distribution or delivery of the
Securities, except with its affiliates or with the prior written consent of the
Company and Capital.

  (2) Notwithstanding the foregoing, Securities in registered form may be
offered, sold and delivered by the Purchasers in the United States and to U.S.
persons pursuant to Section 3 of this Agreement without delivery of the written
statement required by paragraph (1) above.

  (3) Each Purchaser further represents and agrees that (i) it has not offered
or sold, and will not offer or sell, in the United Kingdom by means of any
document, any Securities other than to persons whose ordinary business it is to
buy or sell debentures, whether as principal or as agent, or in circumstances
which do not constitute an offer to the public within the meaning of the
Companies Act 1985 of the United Kingdom, (ii) it has complied, and will comply,
with all applicable provisions of the Financial Services Act 1986 of the United
Kingdom with respect to anything done by it in relation to the Securities in,
from or otherwise involving the United Kingdom, and (iii) it has only issued or
passed on, and will only issue or pass on, in the United Kingdom, any document
received by it in connection with the issuance of the Securities to a person who
is of a kind described in Article 11(3) of the Financial Services Act 1986
(Investment Advertisements) (Exemptions) Order 1995 of the United


                                      A-1

 
Kingdom or is a person to whom the document may otherwise lawfully be issued or
passed on.

  (4) Each Purchaser agrees that it will not offer, sell or deliver any of the
Securities in any jurisdiction outside the United States except under
circumstances that will result in compliance with the applicable laws thereof,
and that it will take at its own expense whatever action is required to permit
its purchase and resale of the Securities in such jurisdictions.  Each Purchaser
understands that no action has been taken to permit a public offering in any
jurisdiction outside the United States where action would be required for such
purpose.  Each Purchaser agrees not to cause any advertisement of the Securities
to be published in any newspaper or periodical or posted in any public place and
not to issue any circular relating to the Securities, except in any such case
with Goldman, Sachs & Co.'s express written consent and then only at its own
risk and expense.













                                      A-2

 
                                                                        ANNEX II
  Pursuant to Section 7(e) of the Purchase Agreement, the accountants shall
furnish letters to the Purchasers to the effect that:

      (i)    They are independent certified public accountants with respect to
   the Company, its subsidiaries and Capital under rule 101 of the American
   Institute of Certified Public Accountants' Code of Professional Conduct, and
   its interpretations and rulings;

      (ii)   In their opinion, the consolidated financial statements and
   financial statement schedules audited by us and included in the Offering
   Circular comply as to form in all material respects with generally accepted
   accounting principles;

      (iii)  The unaudited selected financial information with respect to the
   consolidated results of operations and financial position of the Company for
   the two most recent fiscal years included in the Offering Circular agrees
   with the corresponding amounts (after restatements where applicable) in the
   audited consolidated financial statements for such two fiscal years;

      (iv)   On the basis of limited procedures not constituting an audit in
   accordance with generally accepted auditing standards, consisting of a
   reading of the unaudited financial statements and other information referred
   to below, a reading of the latest available interim financial statements of
   the Company, its subsidiaries and Capital, inspection of the minute books of
   the Company, its subsidiaries and Capital since the date of the latest
   audited financial statements included in the Offering Circular, inquiries of
   officials of the Company, its subsidiaries and Capital responsible for
   financial and accounting matters and such other inquiries and procedures as
   may be specified in such letter, nothing came to their attention that caused
   them to believe that:

     (A)     the unaudited consolidated statements of income, consolidated
   balance sheets and consolidated statements of cash flows included in the
   Offering Circular are not in conformity with generally accepted accounting
   principles applied on the basis substantially consistent with the basis for
   the unaudited condensed consolidated statements of income, consolidated
   balance sheets and consolidated statements of cash flows included in the
   Offering Circular;

     (B)     any other unaudited income statement data and balance sheet items
   included in the Offering Circular do not agree with the corresponding items
   in the unaudited consolidated financial statements from which such data and
   items were derived, and any such unaudited data and items were not determined
   on a basis substantially consistent with the basis for the corresponding
   amounts in the audited consolidated financial statements included in the
   Offering Circular;

     (C)     the unaudited financial statements which were not included in the
   Offering Circular but from which were derived any unaudited condensed
   financial statements referred to in Clause (A) and any unaudited income
   statement data and balance sheet items included in the Offering Circular and
   referred to in Clause (B) were not determined



 
   on a basis substantially consistent with the basis for the audited
   consolidated financial statements included in the Offering Circular;

     (D)  any unaudited pro forma consolidated condensed financial statements
   included in the Offering Circular do not comply as to form in all material
   respects with the applicable accounting requirements or the pro forma
   adjustments have not been properly applied to the historical amounts in the
   compilation of those statements;

     (E)  as of a specified date not more than five days prior to the date of
   such letter, there have been any changes in the aggregate level of membership
   interests, consolidated capital stock (other than issuances of capital stock
   upon exercise of options and stock appreciation rights, upon earn-outs of
   performance shares and upon conversions of convertible securities, in each
   case which were outstanding on the date of the latest financial statements
   included in the Offering Circular or any increase in the consolidated long-
   term debt of the Company, its subsidiaries and Capital, or in the capital
   stock or long-term debt of Capital, or any decreases in consolidated net
   current assets, members' equity or stockholders' equity or other items
   specified by the Purchasers, or any increases in any items specified by the
   Purchasers, in each case as compared with amounts shown in the latest balance
   sheet included in the Offering Circular except in each case for changes,
   increases or decreases which the Offering Circular discloses have occurred or
   may occur or which are described in such letter; and

     (F)  for the period from the date of the latest financial statements
   included in the Offering Circular to the specified date referred to in Clause
   (E) there were, except as specified therein, any decreases in consolidated
   net revenues or operating profit (loss) or the total or per share amounts of
   consolidated net income (loss) or other items specified by the Purchasers, or
   any increases in any items specified by the Purchasers, in each case as
   compared with the comparable period of the preceding year and with any other
   period of corresponding length specified by the Purchasers, except in each
   case for decreases or increases which the Offering Circular discloses have
   occurred or may occur or which are described in such letter; and

      (v) In addition to the examination referred to in their report(s) included
   in the Offering Circular and the limited procedures, inspection of minute
   books, inquiries and other procedures referred to in paragraphs (iii) and
   (iv) above, they have carried out certain specified procedures, not
   constituting an audit in accordance with generally accepted auditing
   standards, with respect to certain amounts, percentages and financial
   information specified by the Purchasers, which are derived from the general
   accounting records of the Company, its subsidiaries and Capital, which appear
   in the Offering Circular, and have compared certain of such amounts,
   percentages and financial information with the accounting records of the
   Company, its subsidiaries and Capital and have found them to be in agreement.



                                       2