Leidos Holdings, Inc. engages in the provision of services and solutions in the defense, intelligence, civil and health markets. It operates through the following three segments: Defense Solutions, Civil, and Health. The Defense Solutions segment provides services, solutions, and products focusing on digital modernization, mission systems and integration, Command, Control, Computers, Communications, Intelligence, Surveillance and Reconnaissance (""C4ISR"") technologies and services, maritime solutions, transformative software, analytics, intelligence analysis, mission support and logistics services, weapons systems and space systems and solutions. The Civil segment focuses on modernizing infrastructure, systems, and security. The Health segment offers solutions to federal and commercial customers that are responsible for the health and wellbeing of people worldwide including service members and veterans. The company was founded by John Robert Beyster on February 3, 1969 and is headquartered in Reston, VA.