L-3 Communications Government Services, Inc. (L-3 GSI) is a nationally recognized management and services company with more than 26 years of experience in information technology services; security systems, solutions, and services; and engineering, analysis, and program services for the Departments of Defense and Homeland Security, the U.S. intelligence community, and a selection of civilian federal, state, and local agencies. 

L3 is a leading provider of a broad range of communication and electronic systems and products used on military, homeland security and commercial platforms. L3 is also a prime contractor in aerospace systems, security and detection systems, and pilot training.

3 is composed of four business segments:

Aerospace Systems
Aerospace Systems delivers integrated solutions for the global ISR market and provides modernization, upgrade, sustainment, and maintenance and logistics support for a wide variety of aircraft and ground systems.

Electronic Systems
Electronic Systems provides a broad range of components, products, subsystems, systems and related services for military and commercial customers.

Communication Systems
Communication Systems delivers products and services for the global communications market, specializing in strategic and tactical airborne, space, ground and sea-based communication systems.

Sensor Systems
Sensor Systems offers a diverse portfolio of innovative sensor technologies across the maritime, land, airborne, space and cyber domains.