November 14, 2005

Securities and Exchange Commission
100 F Street, N.E.
Washington, D.C.  20549
Attention: Mr. Larry Spirgel
           Assistant Director

                  Re: EMERGENCY MEDICAL SERVICES L.P.
                      EMERGENCY MEDICAL SERVICES CORPORATION
                      Amendment No. 3 to Registration Statement on Form S-1
                      (File No. 333-127115)
                      -----------------------------------------------------

Dear Mr. Spirgel:

         Our clients, Emergency Medical Services L.P. and Emergency Medical
Services Corporation (together, "EMS"), have filed today with the Commission
Pre-Effective Amendment No. 3 to EMS's Registration Statement on Form S-1.

         The following responds to the Staff's comments contained in your letter
dated November 1, 2005 concerning Amendment No. 2 to EMS's Registration
Statement on Form S-1 filed on October 19, 2005. The text of the Staff's
comments is set forth in italics below, followed by the response of EMS. Certain
responses refer to specific pages without reference to a document; these are
references to pages of the prospectus contained in Amendment No. 3. The
information in these responses was provided to us by EMS.

         Enclosed with the copy of this letter being hand-delivered to Daniel F.
Zimmerman are four copies of Amendment No. 3, marked to show changes from
Amendment No. 2.

1.    We note that your responses to prior comments 1, 2, 3 and 13 of our
      September 29, 2005 comment letter and our response to comment 43 of our
      initial September 2, 2005 comment letter. We are unable to evaluate the
      application of the securities laws to your reorganization and exchange
      offer because we do not have sufficient information or analysis from you
      regarding the reorganization or the exchange offer that you are
      registering. Until we understand the reorganization and the exchange
      offer, and you provide us with all agreements governing the terms of the
      securities and transactions, we will not comment on the disclosure
      relating to the exchange offer. Therefore, we may have further comment,
      and you should provide us with enough time to evaluate your transactions,
      the agreements and related disclosure prior to circulating preliminary
      prospectuses. While we have specific comments on your responses, below, we
      are generally seeking additional details and further analyses of comments
      1, 2, 3 and 13 of the prior comment letter and comment 43 of our initial
      comment letter.

      RESPONSE:

         The following is a description of the reorganization of Emergency
Medical Services L.P. ("EMS LP") and our analysis of the applicable federal
securities laws:

         o  EMS LP, a Delaware limited partnership, was formed to acquire the
            outstanding common stock of American Medical Response, Inc. ("AMR")
            and EmCare Holdings Inc. ("EmCare") from Laidlaw International Inc.
            The purchase was completed on February 10, 2005.

Securities and Exchange Commission      2                      November 14, 2005


         o  EMS LP is governed by its Agreement of Limited Partnership of EMS
            LP, dated February 10, 2005 (the "Partnership Agreement"), among
            EMSC, Inc. ("EMSC"), as general partner, and the persons listed on
            Schedule A to the Partnership Agreement (the "limited partners").
            (The Partnership Agreement has been filed as Exhibit 3.4 to the
            Registration Statement.) On February 10, 2005, the date of EMS LP's
            acquisition of AMR and EmCare, Onex Partners LP, a private equity
            fund, Onex Corporation (through affiliates) and their professionals
            (together, the "Sponsor") owned 96% of the partnership interests of
            EMS LP, in the form of class A units. Two other accredited investors
            held the balance of the class A units (less than 1% of EMS LP) and
            members of senior management of the new EMS entity (formerly
            executive officers of AMR and EmCare) held the balance of the EMS LP
            equity, in the form of class B units.

         o  The class A units are the only limited partnership units of EMS LP
            that have voting rights.

         o  Section 8.1 of the Partnership Agreement provides that EMSC has sole
            responsibility for the management of the business and affairs of EMS
            LP.

         o  Section 13.1 of the Partnership Agreement provides as follows:

                  This Agreement represents the entire agreement among the
                  parties with respect to its subject matter and CANNOT BE
                  CHANGED OR TERMINATED EXCEPT BY AN INSTRUMENT IN WRITING
                  SIGNED BY THE GENERAL PARTNERS AND LIMITED PARTNERS HOLDING
                  MORE THAN 50% OF THE CLASS A UNITS OUTSTANDING. If,
                  notwithstanding the provisions of Section 8.1, the General
                  Partner, in its sole discretion, seeks the consent of the
                  Limited Partners to any action, such consent shall require
                  only an instrument or instruments in writing signed by Limited
                  Partners holding more than 50% of the Class A Units
                  outstanding. [emphasis added]

         o  Approximately 233,050 class B units (approximately 1% of EMS LP)
            were sold to approximately 170 employees, affiliated physicians and
            nurse practitioners who purchased those units in EMS LP's offerings
            under Rule 701 and in reliance on the exemption provided by Rule
            506.



Securities and Exchange Commission      3                      November 14, 2005

   o  During the course of the Sponsor's preparation of the Registration
      Statement on Form S-1 for the public offering of the equity of EMS LP, the
      Sponsor was advised by Canadian tax counsel that the conversion of EMS LP
      to a corporation, to effect a public offering of common stock, or the
      contribution of EMS LP limited partnership interests to a corporation
      could have adverse tax consequences to the EMS LP limited partners who are
      Canadian residents. The underwriters of the proposed offering advised the
      Sponsor that the IPO would not be feasible if the issuer was a limited
      partnership, and therefore a corporate issuer should be used. Accordingly,
      rather than effecting a conversion of EMS LP into a Delaware corporation,
      or requiring the Sponsor to contribute its EMS LP interests to a
      corporation, EMSC has structured the proposed transaction so that:

         o  the Sponsor, as the holder of the general partner interest in EMS LP
            (through ownership of the stock of EMSC) would contribute the stock
            of EMSC for shares of class B common stock of newly-formed Emergency
            Medical Services Corporation (referred to here as the "Issuer"), so
            that EMS LP would become a consolidated subsidiary of the Issuer;

         o  the Sponsor would amend the Partnership Agreement of EMS LP to
            effect the mandatory exchange of the approximately 3% of the EMS LP
            interests represented by class B units for class A common stock of
            the Issuer through a contribution of those interests to the Issuer;

         o  the Sponsor would amend the Partnership Agreement of EMS LP to
            effect the mandatory exchange of the class A units held by persons
            other than the Sponsor (holding less than 1% of the EMS LP
            interests) for class B common stock of the Issuer through a
            contribution of those interests to the Issuer; and

         o  the class A units held by the Sponsor would, at the effective time
            of the IPO, become exchangeable one-for-one for class B common stock
            of the Issuer; until such exchange, the Sponsor would have the
            benefit of a share of class B special voting stock of the Issuer,
            intended to confer on the Sponsor voting rights equivalent to those
            it would hold on the exchange.

         The Sponsor controls EMS LP absolutely -- it owns the stock of the GP
and holds approximately 99% of all of the EMS LP voting interests. It is the
Sponsor that made the decision to structure the reorganization as it is
described in the Registration Statement, it is the Sponsor that established the
terms of the LP exchangeable units described in the Registration Statement and
it is the Sponsor that has the power to implement these decisions unilaterally.
The Sponsor will determine the final terms of the LP exchangeable units, which
will be reflected in an amended and restated agreement of limited partnership of
EMS LP (the "Amended Agreement"). The Sponsor is not required to, and has not
and will not, seek the consent of the holders of the class B units or the other
holders of class A units to the terms of the Amended Agreement, to the
reorganization, or to the terms of the LP exchangeable units or the exchange. In
fact, the only event in this process that deals with anyone other than the
Sponsor is the forced exchange of the class B units for class A common stock of
the Issuer (and the deemed exchange of a limited number of class A units for
class B common stock). The exchange of class B units for class A common stock
will occur by operation of the contractual provision of the Partnership
Agreement -- Section 13.1 cited above -- that requires only the consent of the
Sponsor to amend that agreement and effect the reorganization. In connection
with the IPO,



Securities and Exchange Commission      4                      November 14, 2005

the Sponsor will, in fact, amend the Partnership Agreement to provide for the
forced exchange. As such, the exchange will be automatic and does not require --
or permit -- the holders of the class B units to elect whether to accept the
class A common stock. The class B unitholders have no vote, no discretion and
will have no remedy in connection with the effectuation of the reorganization.

         We do not believe that the absence of an investment decision on the
part of the holders of EMS LP class B units causes the issuance of Issuer class
A common stock to be anything other than a "sale" for purposes of Section 5 of
the Securities Act, and we have therefore concluded that this issuance must be
registered unless there is an exemption available from registration under the
Securities Act. In our earlier response to comment 43, we inadvertently referred
to this exchange as an "offering" that is subject to Section 5, rather than a
forced "sale" or exchange. As we stated in our response to the Staff's comment
letter dated September 2, 2005, we have concluded that the forced exchange of
class B units of EMS LP for class A common stock of the Issuer does not have the
benefit of any exemption from registration under the Securities Act:

            o  The issuance is not a private placement under Section 4(2) of the
               Securities Act. In addition to the EMS L.P. partnership units
               held by Emergency Medical Services' executive officers and
               directors, approximately 233,050 partnership units are held by
               approximately 170 employees, affiliated physicians and nurse
               practitioners who purchased those units in EMS L.P.'s offerings
               under Rule 701 and in reliance on the exemption provided by Rule
               506.

            o  The issuance is not exempt under Section 3(a)(9) of the
               Securities Act because it is not an issuance of securities by the
               Issuer to its existing security holders. Rather, the Issuer is
               issuing its class A common stock to holders of partnership units
               of a separate entity, EMS LP, in connection with a reorganization
               in which the limited partnership will become a subsidiary of the
               Issuer.

            o  We considered the provisions of Rule 145 promulgated under the
               Securities Act relating to reclassifications of securities. The
               reorganization that will result in the formation of the holding
               company issuer is not of the type contemplated by Section (a)(1)
               of the Rule as not involving a sale of securities. As described
               above, the issuance of securities in the holding company
               formation involves the substitution of the securities of one
               issuer (the corporation) for the securities of another (the
               limited partnership).

         As noted above, for purposes of the Securities Act the exchange is a
forced sale of the class B units. There is no consent required or sought from
the unitholders, and the exchange is automatic and compulsory. As we noted in
our response to comment 2 of the Staff's letter dated September 29, 2005, this
exchange does not fit within the description of any of the types of transactions
set forth in the General Instructions to Form S-4:

            o  The exchange is not a transaction of the type described in
               paragraph (a) of Rule 145. It is not conditioned upon a vote or
               consent of securityholders. The exchange is compulsory and is
               automatic upon the occurrence of the



Securities and Exchange Commission      5                      November 14, 2005

               initial public offering. The exchange requires no vote, no
               consent and no investment decision by, and no solicitation of,
               the holders of the class B units.

            o  The exchange is not a merger in which the applicable state law
               would not require the solicitation of the votes or consent of all
               of the security holders of the company being acquired.

            o  The exchange is not an exchange offer for securities of the
               issuer or another entity. The exchange is not an "offer" to
               exchange the class B units, but rather a compulsory and automatic
               exchange which neither requires nor allows the holders of the
               class B units to elect to accept the exchange of class B units
               for class A common stock. The holders of the class B units are
               not making any investment decision -- they have delegated that
               decision to the Sponsor.

            Accordingly, we believe the Form S-1 -- which is available for
      "registration... of securities of all registrants for which no other form
      is authorized or prescribed" -- is the appropriate form on which to
      register the class A common stock to be issued in the exchange.

2.    Since you are registering an exchange that is part of your restructuring,
      please explain the exchange more clearly and specifically. In your
      response to prior comment 1, you state that the exchange of class A common
      stock for Class B Limited Partnership units of Emergency Medical Services
      L.P. "will occur by operation of a contractual provision in the
      Partnership Agreement of Emergency Medical Services L.P. (the "Partnership
      Agreement") under which the Class B Units are issued." Also, in your
      response to prior comment 3, you state that "[t]he terms of the Exchange
      were finalized by these Class A Unit holders prior to the filing of the
      registration statement and without the participation of the remaining two
      Class A Unit holders or the holders of the Class B Units."

      Tell us in your response letter, with a view to disclosure:

            o     what sections in which Limited Partnership Agreement contain
                  the "Contractual Provision" that effects the exchange of the
                  Class B units that you describe in response to prior comment
                  1, and which sections provide for the other features of the
                  restructuring that you reference in your responses;

            o     on what date the amended Limited Partnership Agreement was
                  executed or will be executed. File the amended Limited
                  Partnership Agreement as an exhibit.

            o     identify who were "these Class A Unit holders" who finalized
                  the "Terms of the Exchange," tell us the date on which they
                  finalized the terms and what document contains the finalized
                  terms. File that document as an exhibit.

            o     explain why the exchange offer, the terms of which you state
                  in prior comment 3 "Were established by the holders of the
                  Class A Units representing approximately 98% of The Limited
                  Partnership interests in the Partnership," does not constitute
                  a change in the terms of the Class B Units.

      We may have further comment.



Securities and Exchange Commission      6                      November 14, 2005

      RESPONSE:

            As described above in response to comment 1:

            o     The contractual provision of the Partnership Agreement that
                  permits the automatic exchange of the class B units is Section
                  13.1. What we mean by our reference is not that the
                  Partnership Agreement itself actually sets forth the mechanics
                  of the exchange but, rather, that the contractual provision
                  authorizes the Sponsor to effect any and all amendments to
                  that agreement. The exchange itself will be set forth in an
                  amendment authorized by the Sponsor as permitted by Section
                  13.1. That amendment will also authorize and establish the
                  other features of the reorganization, including the final
                  terms of the LP exchangeable units held by the Sponsor.

            o     The Amended Agreement has not been finalized or executed. It
                  will be executed prior to consummation of the offering and
                  will be filed as an exhibit to the Registration Statement. A
                  draft of the Amended Agreement is being delivered to the staff
                  concurrently with the filing of Amendment No. 3.

            o     The Sponsor was the "Class A unit holders" who determined the
                  structure of the reorganization. The terms of the exchange are
                  simple, and were reflected in the initial filing of the
                  Registration Statement -- that there will be a one-for-one
                  exchange of class B units for class A common stock. That is
                  the only term relevant to a class B unit holder. The Amended
                  Agreement memorializing this term, and setting forth the
                  provisions detailing the exchangeable provisions applicable to
                  the Sponsor's limited partnership interests will not be signed
                  until shortly before effectiveness of the registration
                  statement. As is often the case with recapitalizations and
                  restructurings in connection with an initial public offering,
                  Sponsor does not want to put this structure into place until
                  it is assured that the offering is proceeding.

            o     The terms of the class B units will not be changed. However,
                  holders of class B units will be deemed to have contributed
                  those units to the Issuer in exchange for class A common stock
                  of the Issuer. We note that the Partnership Agreement already
                  contemplates such a change from partnership units to common
                  stock of the IPO issuer. Section 8.2(f) of the Partnership
                  Agreement provides that:

                  If at any time in contemplation of, or in connection with, an
                  initial public offering of the equity interests of the
                  Partnership (or a successor), the General Partner determines,
                  in its sole discretion, to change the classification of the
                  Partnership for federal, state or local income tax purposes,
                  the General Partner shall take such steps as it deems
                  necessary or appropriate to effect such change or convert the
                  Partnership into a corporation. The Limited Partners hereby
                  agree to cooperate with, consent to, and take all steps deemed
                  necessary by the General Partner to effect such a change.



Securities and Exchange Commission      7                      November 14, 2005

            Accordingly, the Partnership Agreement already contemplates that
      class B unit holders might hold the issuer's common stock rather than
      partnership interests in the event of an IPO. Moreover, the existing
      equityholder agreements specifically contemplate both the exchange of
      partnership units for common stock and the multiple vote structure of the
      class B common stock/class B special voting stock. Section 3.2 of the
      Equityholders Agreement with all employees, and Section 3.2 of the
      Investors Equityholders Agreement (to which management stockholders are
      party), provides in relevant part as follows:

            3.2 MULTIPLE VOTING STOCK UPON IPO. The Employee Investors hereby
            agree to approve and to raise no objection to the implementation, at
            the election of the Majority Onex Investors in connection with an
            initial Public Offering, of a multiple vote stock to be exchanged
            for the Units that are held by the Onex Investors.

                                  *    *    *

            The Staff had commented previously that the IPO prospectus should
      emphasize the consequences of the reorganization rather than isolated
      legal issues. We agree. If the Staff believes that the additional
      information included in this response is meaningful to the class B unit
      holders, we will include the additional detail in the prospectus to be
      delivered to those persons.

3.    We note that your response to prior comment 2, in which you state that
      "[t]he Exchange is not an `offer' to exchange the Class B Units, but
      rather a compulsory and automatic exchange." However, you also explain in
      your September 14, 2005, letter, in response to initial comment 43, that
      "we have concluded that the issuance of the shares of Emergency Medical
      Services' class A common stock in exchange for the EMS L.P. partnership
      units constitutes an offering that is subject to the requirements of
      Section 5 of the Securities Act." Please explain in your response letter
      why you indicate that the exchange is not an "Offer" for purposes of
      determining what Securities Act registration form to use, while you
      indicate that the exchange is an "offer" for purposes of section 5 of the
      Securities Act.

      RESPONSE:

            As described in response to comment 1, we used the term "offering"
      incorrectly, and should have referred to a "forced sale" for purposes of
      Section 5 for which no exemption is available under the Securities Act. We
      did not intend to infer that the exchange was an "offering" that
      constituted an "exchange offer", as suggested in comment 1 of the Staff's
      letter dated September 29.

4.    Also, although your response to prior comment 3 indicates that you
      finalized the terms of the exchange prior to filing this registration
      statement on August 2, 2005, your responses suggest that the terms will be
      included in the amended limited partnership agreement in Exhibit 3.5.
      Therefore it appears that you have continued to negotiate the agreement
      and that you do not yet have a binding and executed agreement that will
      effect the restructuring and exchange offer. In your response letter,
      provide your analysis of why you believe it is appropriate to register the
      exchange offer prior to having an executed and binding agreement to
      implement the exchange.



Securities and Exchange Commission      8                      November 14, 2005

      RESPONSE:

            As described in response to comment 1, there is no binding or
      executed agreement that will effect the reorganization. But the only TERMS
      of the exchange are the fact of the exchange -- that each class B unit
      will be exchanged for one share of class A common stock. The Sponsor
      identified the structure it proposed to use in the reorganization, and
      described that structure in the initial Registration Statement. It is
      correct that the precise terms of the securities that will continue to be
      held by the Sponsor after the IPO have not been finalized. To the extent
      that the terms of the Sponsor's securities (the LP exchangeable units)
      could be said to affect the terms of the Issuer's common stock to be
      issued to class B unit holders, this is consistent with the many examples
      of an issuer filing a registration before finalizing the terms of a
      security -- for instance, the filing of a registration statement for debt
      securities before the indenture pursuant to which those securities will be
      issued is finalized.

5.    Please tell us in your response letter whether Emergency Medical Services
      Corporation has been formed yet and, if so, why it is not a registrant. In
      addition, tell us whether you intend for EMS L.P. to remain a registrant.
      In this regard, we note that Emergency Medical Services Corporation
      intends to contribute the proceeds of the offering to EMS L.P. in exchange
      for limited partnership interests in EMS L.P. Please refer to Rule 140
      under the Securities Act.

      RESPONSE:

      Emergency Medical Services Corporation was formed as a corporation on
      November 1, 2005. Its audited financial statements are included in
      Amendment No. 3.

      We are aware of the Staff's position that Rule 140 of the Securities Act
      is literally applicable to a registration statement, such as EMS's, where
      the issuer (Emergency Medical Services Corporation) will use the proceeds
      of the offering to purchase the securities of another person (in our case,
      EMS L.P.). Emergency Medical Services Corporation has signed Amendment No.
      3 and become a co-registrant. Accordingly, unless the Staff agrees
      otherwise, EMS L.P. and Emergency Medical Services Corporation will
      continue as co-registrants.

      If EMS L.P. remains a co-registrant, we intend to request that the
      Commission issue an order pursuant to Section 12(h) of the Exchange Act,
      or grant such other relief as it deems appropriate, to exempt EMS L.P.
      from the requirements of Section 15(d) of the Exchange Act.

6.    Also, please understand that we may have additional comments on the
      accounting presentation regarding your LP exchangeable units.

      RESPONSE:

      In response to the Staff's comment in this regard, EMSC will include in
      its audited financial statement a description of its accounting policy
      with respect to the LP exchangeable units. It is our understanding that,
      following your review and discussion of the information submitted by EMS,
      the Staff will not object to the accounting presentation proposed by EMS
      as set forth in Exhibit A to our letter dated September 14, 2005.



Securities and Exchange Commission      9                      November 14, 2005

PROSPECTUS SUMMARY, PAGE 1
- --------------------------

7.    We note your revisions in response to prior comment 5. Continue to revise
      in response to prior comment 5. As currently drafted, the summary section
      is still too long and too repetitive. Further revise to reduce the length
      of your narrative summary to two or three pages and provide a brief,
      balanced, non-repetitive discussion of the most material aspects of you
      and your offering. Your current disclosure is repetitive - for example,
      you include general statements about your opportunities to "outsource,"
      your leadership position and your long operating history in several
      locations in your summary. You similarly repeat disclosure related to your
      risk management programs. Reduce or delete the subsections entitled
      Competitive Strengths and Business Strategy. This disclosure is too
      detailed for the summary and is more appropriate for your business
      discussion.

      RESPONSE:

      The Summary has been further revised in response to the Staff's comment.

8.    We note your revisions in response to prior comment 6. Further revise to
      disclose the expiration date of your obligation to pay the annual
      management fee.

      RESPONSE:

      The disclosure has been revised to add that the agreement has automatic
      one-year renewals, subject to termination by either party.

FORMATION OF HOLDING COMPANY, PAGE 26
- -------------------------------------

9.    Please provide organization charts showing the structure, ownership and
      control of the company and EMS L.P. before and after the reorganization.

      RESPONSE:

      The requested organization charts have been included.

USE OF PROCEEDS, PAGE 27
- ------------------------

10.   Please disclose that you intend to contribute the net proceeds of the
      offering to EMS L.P. in exchange for limited partnership interests in the
      partnership. EMS L.P. will, in turn, use the proceeds as described.

      RESPONSE:

      We have added statements to the effect that Emergency Medical Services
      Corporation will contribute the net proceeds of the offering to EMS L.P.
      in exchange for partnership interests and that EMS L.P. will, in turn, use
      the proceeds as described.



Securities and Exchange Commission      10                     November 14, 2005

11.   Please disclose in the first bullet point the total amount of your
      outstanding debt under the senior secured credit facility so that it is
      clear upfront that you are only repaying a portion of the debt
      outstanding.

      RESPONSE:

      The bullet has been revised to state the amount of debt outstanding under
      the senior secured credit facility.

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS, PAGE 39
- --------------------------------------------------------------------------

COMPANY OVERVIEW, PAGE 39
- -------------------------

12.   Where you present net revenues and other operating measures in an overview
      context, please also present net income (loss). Similarly revise your
      company overview in your prospectus summary.

      RESPONSE:

      The relevant sections have been revised to present net income (loss).

PRINCIPAL AND SELLING STOCKHOLDERS, PAGE 110
- --------------------------------------------

13.   Your second paragraph appears to state that the Onex entities may sell up
      to 32,107,500 shares of Class A common stock if the underwriters exercise
      their over-allotment option. Please clarify that the Onex entities may
      convert and sell up to 1,170,000 shares of Class A common stock in the
      over-allotment option, as you disclose in the table on page 112.

      RESPONSE:

      This error has been corrected to reflect that the Onex entities may
      convert and sell up to 1,170,000 shares of class A common stock if the
      over-allotment option is exercised.

14.   Also, please explain in your response letter, with a view to disclosure,
      why the beneficial ownership of the Onex entities, as shown in the tables
      on pages 110 and 112, apparently increases if they sell shares in
      connection with the over-allotment option.

      RESPONSE:

      The tables on pages 110 and 112 reflect a decrease in the beneficial
      ownership of the Onex entities if the over-allotment option is exercised,
      from 32,107,523 shares of class B common stock to 30,937,500 shares. The
      table on page 110 shows the Onex entities beneficially owning, in the
      aggregate, 32,107,523 shares of class B common stock; this total is
      reflected in the beneficial ownership of Onex Corporation. In that table,
      three Onex entities are identified separately. The remaining two Onex
      entities -- EMS Executive Investco LLC and Onex US Principals LP -- are
      NOT identified separately in the table on page 110 because they are not 5%
      holders. Page 112 identifies each of the five Onex entities because each
      is a selling stockholder, and shows these Onex entities owning, in



Securities and Exchange Commission      11                     November 14, 2005

      the aggregate, 30,937,500 shares of class B common stock if the
      over-allotment option is exercised in full.

                                   *   *   *

         The responses to comments 1 through 4 included in this letter were
provided previously to the Staff in a memorandum dated November 2, 2005. We
have not changed the text of those responses.

         With respect to comment 4, we wish to advise the Staff that the form of
prospectus to be delivered to class B unitholders included in Amendment No. 3
has been revised. It now includes additional disclosure concerning the amendment
to the EMS L.P. partnership agreement, as well as the provision of the EMS L.P.
partnership agreement that permits it to be amended without the consent of the
class B unitholders. That prospectus has also been revised to include additional
disclosure that would be required if the automatic, compulsory exchange of class
A common stock for class B units had been registered on Form S-4.

                                   *   *   *

         Amendment No. 3 includes financial information for EMS's most recent
quarter and eight months ended September 30, 2005.  EMS has adjusted certain
insurance-related amounts previously reported  for the 2004 fiscal periods
presented in Amendment No. 2.  These adjustments did not impact the audited
fiscal 2004 financial statements or the audited or interim 2005 financial
statements.  The impact of the adjustments was limited to the unaudited interim,
comparable 2004 period information (five months ended January 31, 2004 and
three and five months ended June 30, 2004) presented in Amendment No. 2 and not
required to be included in Amendment No. 3.

                                   *   *   *

         Thank you for your continuing assistance regarding these filings.
Please contact the undersigned at (212) 836-8685 or Marybeth O'Keefe at (212)
836-8456 with any further comments or questions you may have.

                                   Sincerely,

                                   /s/ Lynn Toby Fisher
                                   --------------------
                                   Lynn Toby Fisher

cc:      Daniel F. Zimmerman
         Patrick Kuhn

         Todd G. Zimmerman
         Joel I. Greenberg
         James J. Clark
         Noah B. Newitz