AMSEC LLC, Virginia Beach, Va.; BAE Systems Technology Solutions and Services Inc., Rockville, Md.; Computer Sciences Corp., Falls Church, Va.; L-3 Services Inc. (Engility), Mount Laurel, N.J.; Science Applications International Corp., McLean, Va.; Serco, Reston, Va.; and Scientific Research Corp., Atlanta, Ga., are each being awarded an indefinite-delivery/indefinite-quantity, cost-plus-fixed-fee, with fixed-price incentive (firm target) and firm-fixed-price provisions, multiple-award contract for the procurement of production, installation and in-service support services. The services required include support of design, acquisition, production, integration, testing, installation, and configuration management of certified C5ISR capabilities, with a specific focus on submarine and surface new construction, modernization, systems production/integration, installation and life cycle support of systems and subsystems integrated within or in support of the subsurface and surface platforms, both afloat and shore based. The cumulative estimated value of the base year is $179,908,687. These contracts include options, which if exercised, would bring the cumulative value of these contracts to a combined estimated $899,543,000. Space and Naval Warfare Systems Center Atlantic, Charleston, S.C., is the contracting activity.