EXHIBIT 10.10

                           NONCOMPETITION AGREEMENT


     AGREEMENT by and between Borg-Warner Security Corporation, a Delaware
corporation (the "Company"), and John D. O'Brien (the "Executive"), dated as of
September 5, 1997.

     WHEREAS, the Executive is currently serving as the Senior Vice President
and President of Protected Services of the Company pursuant to an Amended and
Restated Letter Agreement between the Company and the Executive dated as of
September 5, 1997 (the "Letter Agreement");

     WHEREAS, due to the highly competitive nature of the business of the
Company, the Company has determined that it is desirable to enter into a non-
competition agreement with the Executive on the terms and conditions set forth
in this Agreement; and

     WHEREAS, the Executive is willing to enter into such non-competition
agreement upon such terms and conditions;

     NOW, THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

     1. Noncompetition. (a) In the event the Executive's employment under the
Letter Agreement is terminated by the Company without Cause or by the Executive
for Good Reason (as so defined):


 
     (i) During the Noncompetition Period (as defined below), the Executive
     shall not, without the prior written consent of the Board of Directors of
     the Company (the "Board"), engage in or become associated with a
     Competitive Activity.

     (ii) During the one year period beginning on the termination of the
     Executive's Employment under the Letter Agreement, the Executive will not
     directly or indirectly induce any employee of the Company to engage in any
     activity in which the Executive is prohibited from engaging by paragraph
     (i) above or to terminate his employment with the Company, and will not
     directly or indirectly employ or offer employment to any person who is
     employed by the Company.

     (iii) For purposes of Section 1(a)(i): (x) the "Noncompetition Period"
     means the period beginning on such termination of the Executive's
     employment under the Letter Agreement the third anniversary of the
     Executive's termination of employment under the Letter Agreement; (y) a
     "Competitive Activity" means any service business or other endeavor that
     provides guard and investigative services, alarm systems installation and
     monitoring services, armored transport or automated teller machine (ATM)
     services or overnight or same day courier delivery services; and (z) the
     Executive shall be considered to have become "associated with a Competitive
     Activity" if he becomes directly

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     or indirectly involved as an owner, employee, officer, director,
     independent contractor, agent, partner, advisor, or in any other capacity
     calling for the rendition of the Executive's personal services, with any
     individual, partnership, corporation or other organization that is engaged
     in a Competitive Activity. Notwithstanding the foregoing, the Executive may
     make and retain investments during the Noncompetition Period and thereafter
     in not more than five percent of the equity of any entity engaged in a
     Competitive Activity, if such equity is listed on a national securities
     exchange or regularly traded in an over-the-counter market.

     (b) Immediately upon the termination of the Executive's employment by the
Company without Cause or by the Executive for Good Reason (each as defined in
the Letter Agreement), in consideration of the Executive's entering into this
Agreement, the Company shall pay the Executive an amount equal to the sum of (I)
the Base Guarantee (as defined in the Letter Agreement), (II) the Severance
Bonus (as defined in the Letter Agreement) and (III) the annual supplemental
benefit compensation which, absent termination, would have been payable for the
twelve month period following such termination at the rate in effect at the date
of the Executive's termination of employment.

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     (c) The Executive acknowledges and agrees that his obligations under this
Section 1 are of a special, unique and extraordinary character and that a
failure to perform any such obligation or a violation thereof may cause
irreparable injury to the Company, the amount of which will be impossible to
estimate or determine and which cannot be adequately compensated. Therefore, the
Executive agrees that the Company shall be entitled, as a matter of course, to
an injunction, restraining order, writ of mandamus or other equitable relief
from any court of competent jurisdiction, including relief in the form of
specific performance, restraining any violation or threatened violation of any
term of this Section 1, or requiring compliance with or performance of any
obligation under this Section 1 by the Executive and such other persons as the
court shall order. The rights and remedies provided the Company hereunder are
cumulative and shall be in addition to the rights and remedies otherwise
available to the Company under any other agreement or applicable law. In
addition, the Executive agrees that if he breaches any provision of this Section
1, the Executive shall remit to the Company any amounts paid to him pursuant to
paragraph (b) above. The Executive acknowledges and agrees that the provisions
of this paragraph (c) are reasonable and necessary for the protection of the
Company.

     2. Arbitration; Attorneys' Fees. Except as provided in Section 1(c) above,
any dispute or controversy arising under or in connection with this Agreement
shall be settled exclusively by arbitration in the State of Illinois, in

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accordance with the rules of the American Arbitration Association then in
effect, and judgment may be entered on the arbitrator's award in any court
having jurisdiction. If the Executive shall prevail, in whole or in part, as to
any material issue in any contest (whether initiated by the Executive or by the
Company) as to the validity, enforceability or interpretation of any provision
of this Agreement, the Company shall pay all reasonable expenses incurred by the
Executive with respect to such contest, including, without limitation, his
reasonable attorney's fees.

     3. Successors. (a) This Agreement is personal to the Executive and, without
the prior written consent of the Company, shall not be assignable by the
Executive otherwise than by will or the laws of descent and distribution. This
Agreement shall inure to the benefit of and be enforceable by the Executive's
legal representatives.

     (b) This Agreement shall inure to the benefit of and be binding upon the
Company and its successors and assigns.

     (c) The Company shall require any successor (whether direct or indirect, by
purchase, merger, consolidation or otherwise) to all or substantially all of the
business and/or assets of the Company expressly to assume and agree to perform
this Agreement in the same manner and to the same extent that the Company would
have been required to perform it if no such succession had taken place. As used
in this Agreement, "Company" shall mean both the Company as defined

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above and any such successor that assumes and agrees to perform this Agreement,
by operation of law or otherwise.

     4. Miscellaneous. (a) This Agreement shall be governed by, and construed in
accordance with, the laws of the State of Delaware, without reference to
principles of conflict of laws. The captions of this Agreement are not part of
the provisions hereof and shall have no force or effect. This Agreement may not
be amended or modified except by a written agreement executed by the parties
hereto or their respective successors and legal representatives.

     (b) All notices and other communications under this Agreement shall be in
writing and shall be given by hand delivery to the other party or by registered
or certified mail, return receipt requested, postage prepaid, addressed as
follows:

     If to the Executive:

     John D. O'Brien
     892 Timber Lane
     Lake Forest, Illinois 60045

     
     If to the Company:

     Borg-Warner Security Corporation
     200 South Michigan Avenue
     Chicago, Illinois 60604
     Attention: General Counsel

or to such other address as either party furnishes to the other in writing in
accordance with this Section 4(b). Notices and communications shall be effective
when actually received by the addressee.

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     (c) The invalidity or unenforceability of any provision of this Agreement
shall not affect the validity or enforceability of any other provision of this
Agreement. If any provision of this Agreement shall be held invalid or
unenforceable in part, the remaining portion of such provision, together with
all other provisions of this Agreement, shall remain valid and enforceable and
continue in full force and effect to the fullest extent consistent with law.

     (d) Notwithstanding any other provision of this Agreement, the Company may
withhold from amounts payable under this Agreement all federal, state, local and
foreign taxes that are required to be withheld by applicable laws or
regulations.

     (e) The failure of the Executive or the Company to insist upon strict
compliance with any provision of, or to assert any right under, this Agreement
shall not be deemed to be a waiver of such provision or right or of any other
provision of or right under this Agreement.

     (f) This Agreement may be executed in one or more counterparts, each of
which shall be deemed an original, and which together shall constitute one
instrument.

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     IN WITNESS WHEREOF, the Executive has hereunto set the Executive's hand
and, pursuant to the authorization of the Board, the Company has caused this
Agreement to be executed in its name on its behalf, all as of the day and year
first above written.


                                       /s/ John D. O'Brien
                                       -------------------
                                       John D. O'Brien
                                     
                                       BORG-WARNER SECURITY
                                         CORPORATION
                                     
                                     
                                       By: /s/ J. Joe Adorjan           
                                       Name:
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                                       Title:
  
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