THIRTEENTH AMENDMENT TO SECOND AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT

1.            Defined Terms.  Unless otherwise defined herein, capitalized terms used herein shall have the meanings ascribed to such terms in the Loan Agreement.

2.            Amendments to Loan Agreement.  Subject to the satisfaction of the conditions set forth in Section 4 hereof, and in reliance upon the representations and warranties set forth in Section 7(a) hereof, the Loan Agreement is hereby amended as follows:

(a)            Each of the following defined terms is hereby added to Section 1.1 of the Loan Agreement in the appropriate alphabetical order:

(b)            Section 1.1 of the Loan Agreement is amended by amending the definition of the term "Permitted Investments" set forth therein by (i) replacing the "and" immediately preceding clause (h) thereof with a ",", (ii) replacing the "." at the end of clause (h) thereof with ", and", and (iii) inserting a new clause (i) at the end thereof as follows:

(c)            Section 7.8 of the Loan Agreement is hereby amended to add a new clauses (g) at the end thereof as follows:

3.            Ratification.  This Amendment, subject to satisfaction of the conditions set forth in Section 4 hereof, shall constitute an amendment to the Loan Agreement and all of the Loan Documents as appropriate to express the agreements contained herein.  Except as specifically set forth herein, the Loan Agreement and the Loan Documents shall remain unchanged and in full force and effect in accordance with their original terms.

4.            Conditions to Effectiveness.  This Amendment shall become effective upon the satisfaction of the following conditions precedent:

(a)            Each party hereto shall have executed and delivered this Amendment to Agent;

(b)            Agent shall have received fully executed copies of the IT Enterprise JV Documents in form and substance satisfactory to Agent, and such other documents, agreements and instruments as may be requested or required by Agent in connection with this Amendment, each in form and content acceptable to Agent;

(c)            No Default or Event of Default shall have occurred and be continuing on the date hereof or as of the date of the effectiveness of this Amendment; and

(d)            All proceedings taken in connection with the transactions contemplated by this Amendment, the IT Enterprise JV Documents and all documents, instruments and other legal matters incident thereto shall be satisfactory to Agent and its legal counsel.

5.            Post-Effective Date Covenant from Waiver and Twelfth Amendment.  On or before May 15, 2015, Telos covenants and agrees that it shall deliver a copy of a filed UCC-3 termination statement of the following financing statement currently filed in favor of Key Government Finance, Inc., as secured party, against Telos in the state of Maryland:  filing number 0000000181418923 filed April 22, 2011 (the "Key Government Finance Filing").  Each Company acknowledges and agrees that the failure of Telos to comply with the covenant in this Section 5 shall constitute an immediate Event of Default.   This covenant replaces in its entirety the covenant set forth in Section 6(b) of the Waiver and Twelfth Amendment to Second Amended and Restated Loan and Security Agreement dated as of March 31, 2015 by and among Borrowers, Credit Parties, Agent and Lenders (such that the deadline for such covenant is now May 15, 2015 rather than 21 days following March 31, 2015).

6.            Reaffirmation and Confirmation.  Each Company hereby ratifies, affirms, acknowledges and agrees that the Loan Agreement and the other Loan Documents represent the valid, enforceable and collectible obligations of such Company, and further acknowledges that there are no existing claims, defenses, personal or otherwise, or rights of setoff whatsoever with respect to the Loan Agreement or any other Loan Document.  Each Company hereby agrees that this Amendment in no way acts as a release or relinquishment of the Liens and rights securing payments of the Obligations.  The Liens and rights securing payment of the Obligations are hereby ratified and confirmed by each Company in all respects.

7.            Miscellaneous.

(a)            Warranties and Absence of Defaults.  To induce Agent and Lenders to enter into this Amendment, each Company hereby represents and warrants to Agent and Lenders that:

(i)

The execution, delivery and performance by it of this Amendment, the IT Enterprise JV Documents and each of the other agreements, instruments and documents contemplated hereby are within its corporate power, have been duly authorized by all necessary corporate action, have received all necessary governmental approval (if any shall be required), and do not and will not contravene or conflict with any provision of law applicable to it, its articles of incorporation and by‑laws, any order, judgment or decree of any court or governmental agency, or any agreement, instrument or document binding upon it or any of its property;

(ii)

each of the Loan Agreement and the other Loan Documents, as amended by this Amendment, are the legal, valid and binding obligation of each Company party thereto enforceable against it in accordance with its terms, except as the enforcement thereof may be subject to (A) the effect of any applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting creditor's rights generally, and (B) general principles of equity;

(iii)

the representations and warranties contained in the Loan Agreement and the other Loan Documents are true and accurate as of the date hereof with the same force and effect as if such had been made on and as of the date hereof; and

(iv)

each Company has performed all of its obligations under the Loan Agreement and the other Loan Documents to be performed by it on or before the date hereof and as of the date hereof, it is in compliance with all applicable terms and provisions of the Loan Agreement and each of the Loan Documents to be observed and performed by it and no Event of Default or Default has occurred.

(b)            Expenses.  Each Company hereby agrees that Companies, jointly and severally, shall pay on demand all costs and expenses of Agent and each Lender (including the reasonable fees and expenses of outside counsel) in connection with the preparation, negotiation, execution, delivery and administration of this Amendment and all other instruments or documents provided for herein or delivered or to be delivered hereunder or in connection herewith.  In addition, each Company hereby agrees that Companies, jointly and severally, shall pay, and save Agent harmless from all liability for, any stamp or other taxes which may be payable in connection with the execution or delivery of this Amendment or the Loan Agreement, as amended hereby, and the execution and delivery of any instruments or documents provided for herein or delivered or to be delivered hereunder or in connection herewith.  All obligations provided herein shall survive any termination of the Loan Agreement as amended hereby.

(c)            Governing Law.  This Amendment shall be a contract made under and governed by the internal laws of the State of Illinois.

(d)            Counterparts.  This Amendment may be executed in any number of counterparts, and by the parties hereto on the same or separate counterparts, and each such counterpart, when executed and delivered, shall be deemed to be an original, but all such counterparts shall together constitute but one and the same Amendment.  Delivery of an executed counterpart of a signature page of this Amendment by facsimile or by electronic transmission of a portable document file (PDF) or similar file shall be effective as delivery of a manually executed counterpart of this Amendment.

8.            Release.

(a)            In consideration of the agreements of Agent and Lenders contained herein and for other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, each Company on behalf of itself and such Company's successors, assigns, and other legal representatives, hereby absolutely, unconditionally and irrevocably releases, remises and forever discharges Agent and Lenders, and their successors and assigns, and their present and former shareholders, affiliates, subsidiaries, divisions, predecessors, directors, officers, attorneys, employees, agents and other representatives (Agent, each Lender and all such other Persons being hereinafter referred to collectively as the "Releasees" and individually as a "Releasee"), of and from all demands, actions, causes of action, suits, covenants, contracts, controversies, agreements, promises, sums of money, accounts, bills, reckonings, damages and any and all other claims, counterclaims, defenses, rights of set‑off, demands and liabilities whatsoever (individually, a "Claim" and collectively, "Claims") of every name and nature, known or unknown, suspected or unsuspected, both at law and in equity, which such Company or any of its successors, assigns, or other legal representatives may now or hereafter own, hold, have or claim to have against the Releasees or any of them for, upon, or by reason of any circumstance, action, cause or thing whatsoever which arises at any time on or prior to the day and date of this Amendment, including, without limitation, for or on account of, or in relation to, or in any way in connection with the Loan Agreement, any of the Porter Subordinated Debt Documents, any of the IT Enterprise JV Documents, or any of the other Loan Documents or transactions thereunder or related thereto.

(b)            Each Company hereby acknowledges and agrees that such Company understands, acknowledges and agrees that the release set forth above may be pleaded as a full and complete defense and may be used as a basis for an injunction against any action, suit or other proceeding which may be instituted, prosecuted or attempted in breach of the provisions of such release.

(c)            Each Company hereby acknowledges and agrees that such Company agrees that no fact, event, circumstance, evidence or transaction which could now be asserted or which may hereafter be discovered shall affect in any manner the final, absolute and unconditional nature of the release set forth above.

AGENT AND LENDERS:
WELLS FARGO CAPITAL FINANCE, LLC. (successor by merger to Wells Fargo Capital Finance, Inc.) as Agent and as a Lender
By	/s/ Jordan E. Hilliard
Name	Jordan E. Hilliard
Title	Vice President
BORROWERS:
TELOS CORPORATION
A Maryland corporation
By	/s/ Jefferson V. Wright
Title	Jefferson V. Wright, EVP, General Counsel
XACTA CORPORATION
A Delaware corporation
By	/s/ Jefferson V. Wright
Title	Jefferson V. Wright, EVP, General Counsel
CREDIT PARTIES:
UBIQUITY.COM, INC.
A Delaware corporation
By	/s/ Jefferson V. Wright
Title	Jefferson V. Wright, EVP, General Counsel
TELOWORKS, INC.
A Delaware corporation
By	/s/ David Easley
Title	David Easley, President