Exhibit 1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby (i) agree to the joint filing with all other Reporting Persons (as such term is defined in the statement on Schedule 13D described below) of a statement on Schedule 13D (including amendments thereto) with respect to the common stock, par value $0.10 per share, of Dynamics Research Corporation and (ii) agree that this Agreement be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts all of which taken together shall constitute one and the same instrument.

December 30, 2013

ENGILITY HOLDINGS, INC.
By:	/s/ Thomas O. Miiller
	Name:	Thomas O. Miiller
	Title:	Senior Vice President, General Counsel and Corporate Secretary
ENGILITY CORPORATION
By:	/s/ Thomas O. Miiller
	Name:	Thomas O. Miiller
	Title:	Senior Vice President, General Counsel and Corporate Secretary
ENGILITY SOLUTIONS, INC.
By:	/s/ Thomas O. Miiller
	Name:	Thomas O. Miiller
	Title:	Secretary