The U.S. Navy is awarding indefinite-delivery/indefinite-quantity multiple award contracts to 391 contractors that will provide for their competition for service requirements solicited by Naval Sea Systems Command, Naval Air Systems Command, Space and Naval Warfare Systems Command, Naval Supply Systems Command, Military Sealift Command, Naval Facilities Engineering Command, Strategic Systems Programs, and the United States Marine Corps. The 22 functional service areas within the scope of the contracts include 1. Research and Development Support. 2. Engineering System Engineering and Process Engineering Support. 3. Modeling, Simulation, Stimulation, and Analysis Support. 4. Prototyping, Pre-Production, Model-Making, and Fabrication Support.