Kratos Defense & Security Solutions, Inc. engages in the provision of mission critical products, services and solutions for United States national security priorities. The company is headquartered in San Diego, California and currently employs 4,000 full-time employees. The company operates through two segments: Kratos Government Solutions (KGS) and Unmanned Systems (US). The KGS segment includes its microwave electronic products, space, satellite and cyber, training solutions, command, control, communication, computing, combat, intelligence surveillance and reconnaissance (C5ISR)/modular systems, turbine technologies, and defense and rocket support services operating segments. The US segment consists of its unmanned aerial, unmanned ground, unmanned seaborne and related command, control and communications system businesses. Its KGS and US segments provide products, solutions and services for mission-critical National Security programs. KGS and US customers primarily include National Security-related agencies, the DoD, intelligence agencies and classified agencies, and others.