An important one is with BAE Systems, for whom Opnet does modeling, simulation and research for big initiatives like the U.S. Army's Future Combat System and the Joint Tactical Radio System.

FORBES: Magazine Article

The high-performance systems that Lockheed Martin develops require a range of technologies, including cloud computing, biometrics, information management, modeling and simulation, precision pointing, energy management and storage, optics and electro-optics, and nanotechnology.

ENGADGET: Lockheed Martin's technology hub brings startups closer to government needs