exv4w4






Exhibit 4.4




JOINDER AGREEMENT TO REGISTRATION RIGHTS AGREEMENT

July 20, 2011



          Reference is hereby made to the Registration Rights Agreement, dated as of July 20, 2011 (the
“Agreement”), by and among Sterling Merger Inc. (“Merger Sub”) and the Initial
Purchasers named therein concerning the sale by Merger Sub to the Initial Purchasers of $400.0
million aggregate principal amount of Merger Sub’s 11% Senior Notes due 2019 (the
“Securities”). Unless otherwise defined herein, terms defined in this Joinder Agreement
and used herein shall have the meanings given them in the Agreement.


          1. Joinder of the Successor Company. SRA International, Inc., a Delaware corporation
(the “Company”), hereby agrees to become bound by the terms, conditions and other
provisions of the Agreement with all attendant rights, duties and obligations stated therein, with
the same force and effect as if originally named as the “Issuer” therein and as if such party
executed the Agreement on the date thereof.


          2. Joinder of the Guarantors. Each of the guarantors listed on Annex A hereto
(collectively, the “Guarantors”), hereby agrees to become bound by the terms, conditions
and other provisions of the Agreement with all attendant rights, duties and obligations stated
therein, with the same force and effect as if originally named as “Guarantor” therein and as if
such party executed the Agreement on the date thereof.


          3. Governing Law. This Joinder Agreement shall be governed by and construed in
accordance with the laws of the State of New York.


          4. Counterparts. This agreement may be executed, manually or by facsimile signature,
in any number of counterparts and by the parties hereto in separate counterparts, each of which
when so executed shall be deemed to be an original and all of which taken together shall constitute
one and the same agreement.


          5. Amendments. No amendment or waiver of any provision of this Joinder Agreement, nor
any consent or approval to any departure therefrom, shall in any event be effective unless the same
shall be in writing and signed by the parties hereto.


          6. Headings. The headings in this Joinder Agreement are for convenience of reference
only and shall not limit or otherwise affect the meaning hereof.



[Signature Page Follows]





 









 








     IN WITNESS WHEREOF, the undersigned have executed this Joinder Agreement as of the date first
written above.



	 	 	 	 	 
	 	SRA INTERNATIONAL, INC.

 	 
	 	By:  	/s/ Richard J. Nadeau
 	 
	 	 	Name:  	Richard J. Nadeau 	 
	 	 	Title:  	Chief Financial Officer and Treasurer 	 
	 
	 	SYSTEMS RESEARCH AND APPLICATIONS CORPORATION

 	 
	 	By:  	/s/ Richard J. Nadeau
 	 
	 	 	Name:  	Richard J. Nadeau 	 
	 	 	Title:  	Chief Financial Officer and Treasurer 	 
	 
	 	TOUCHSTONE CONSULTING GROUP, INC.

 	 
	 	By:  	/s/ Richard J. Nadeau
 	 
	 	 	Name:  	Richard J. Nadeau 	 
	 	 	Title:  	Chief Financial Officer and Treasurer 	 
	 
	 	RABA TECHNOLOGIES, LLC

 	 
	 	By:  	/s/ Richard J. Nadeau
 	 
	 	 	Name:  	Richard J. Nadeau 	 
	 	 	Title:  	Chief Financial Officer and Treasurer 	 
	 
	 	CONSTELLA GROUP, LLC

 	 
	 	By:  	/s/ Richard J. Nadeau
 	 
	 	 	Name:  	Richard J. Nadeau 	 
	 	 	Title:  	Chief Financial Officer and Treasurer 	 
	 



[Signature Page to Registration Rights Agreement Joinder]




 









 








	 	 	 	 	 
	 	INTERFACE AND CONTROL SYSTEMS, INC.

 	 
	 	By:  	/s/ Richard J. Nadeau
 	 
	 	 	Name:  	Richard J. Nadeau 	 
	 	 	Title:  	Chief Financial Officer and Treasurer 	 
	 
	 	PERRIN QUARLES ASSOCIATES, INC.

 	 
	 	By:  	/s/ Richard J. Nadeau
 	 
	 	 	Name:  	Richard J. Nadeau 	 
	 	 	Title:  	Chief Financial Officer and Treasurer 	 
	 
	 	CMA GOVERNMENT SOLUTIONS, INC.

 	 
	 	By:  	/s/ Richard J. Nadeau
 	 
	 	 	Name:  	Richard J. Nadeau 	 
	 	 	Title:  	Chief Financial Officer and Treasurer 	 
	 
	 	PLATINUM SOLUTIONS, INC.

 	 
	 	By:  	/s/ Richard J. Nadeau
 	 
	 	 	Name:  	Richard J. Nadeau 	 
	 	 	Title:  	Chief Financial Officer and Treasurer 	 
	 
	 	SENTECH HOLDINGS, INC.

 	 
	 	By:  	/s/ Richard J. Nadeau
 	 
	 	 	Name:  	Richard J. Nadeau 	 
	 	 	Title:  	Chief Financial Officer and Treasurer 	 
	 
	 	SENTECH, INC.

 	 
	 	By:  	/s/ Richard J. Nadeau
 	 
	 	 	Name:  	Richard J. Nadeau 	 
	 	 	Title:  	Chief Financial Officer and Treasurer 	 
	 



[Signature Page to Registration Rights Agreement Joinder]