Raytheon Co., Integrated Defense Systems, Tewksbury, Mass., is being awarded a not-to-exceed $254,000,000 letter contract modification to previously awarded contract (N00024-10-C-5126) for development, test, and delivery of DDG 1000 total ship computing environment software for the Self Defense Test Ship, post-delivery availability, post-shakedown availability, SPY-3 volume search software and firmware development, as well as software maintenance in support of the Zumwalt-class destroyer program.  Work will be performed in Tewksbury, Mass. (40.0 percent); Portsmouth, R.I. (24.8 percent); Marlborough, Mass. (12.7 percent); Fort Wayne, Ind. (10.3 percent); Sudbury, Mass. (5.8 percent); Dahlgren, Va. (2.7 percent); Indianapolis, Ind. (2.3 percent); and San Diego, Calif. (1.4 percent).  Work is expected to be completed by January 2016.  Contract funds in the amount of $11,000,000 will be provided upon contract award and will expire at the end of the current fiscal year.  The Naval Sea Systems Command, Washington, D.C., is the contracting activity.

 Trandes Corp.*, Lanham, Md., is being awarded a potential value $51,186,607 indefinite-delivery/indefinite-quantity, cost-plus-fixed-fee contract to provide various Department of Defense systems commands technical and engineering services support for a variety of airspace systems; command, control, communications, computers, intelligence, surveillance and reconnaissance systems; Marine air traffic control and landing/air traffic control and landing and mobile fixed/tactical fixed systems.  Work will be performed in San Diego (90 percent) and Lanham, Md. (10 percent), and is expected to be completed Jan. 22, 2015.  Contract funds will not expire at the end of the current fiscal year.  This contract was competitively procured as a small business set-aside via request for proposal N66001-10-R-0143 published on the Federal Business Opportunities website, and the Space and Naval Warfare e-Commerce Central website. Six proposals were solicited and three offers were received.  Space and Naval Warfare Systems Center Pacific is the contracting activity (N66001-12-D-0143).

 Science Applications International Corp., McLean, Va., is being awarded an $11,195,326 modification to a previously awarded cost-plus-fixed-fee, indefinite-delivery/indefinite-quantity contract (N00421-11-D-0030) to exercise an option for technical and engineering services in support of the Naval Air Systems Command’s Air Vehicle Engineering Department and the Manned Flight Simulator/Air Combat Environment Test and Evaluation facilities.  Services to be provided support the development and utilization of advanced air vehicle technology for evaluating air vehicle flying qualities and controllability, developing simulation software, and building prototype simulations.  The estimated level of effort is 94,740 man-hours.  Work will be performed in Patuxent River, Md., and is expected to be completed in December 2012.   Funds will not be obligated at time of award.  Funds will be obligated on individual orders as they are issued.  Contract funds will not expire at the end of the current fiscal year.  The Naval Air Warfare Center Aircraft Division, Patuxent River, Md., is the contr