L-3 Communications Holdings, Inc.. The Group's principal activity is providing communication systems, aviation products and support services. It operates through four segments: The Secure Communications segment provides surveillance and communications intelligence systems to military and government departments. The Training, Simulation and Support ... More

L-3 Communications Holdings, Inc.. The Group's principal activity is providing communication systems, aviation products and support services. It operates through four segments: The Secure Communications segment provides surveillance and communications intelligence systems to military and government departments. The Training, Simulation and Support segment provides aircrew training services and software support. The Aircraft Modernization segment provides airborne traffic, collision avoidance systems. The customers include the Department of Defense, state and local government agencies of the United States. The Specialized Products segment provides components for military and commercial applications.