Leidos Holdings, Inc., an applied technology company, delivers solutions and services in the national security, health, and engineering markets in the United States and internationally. The company’s National Security Solutions segment offers solutions and systems for air, land, sea, space, and cyberspace for the U.S. intelligence community, the U.S. department of defense, military services, the U.S. department of homeland security, and government agencies of U.S. allies abroad. Its solutions offer technology, intelligence systems, command and control, data analytics, cybersecurity, logistics, and intelligence analysis and operations support services to critical missions. The Health and Engineering segment offers electronic health record (EHR) system and behavior health services; implements and optimizes EHR systems at commercial hospitals; and provides life science research and development support services. This segment also offers process industries engineering services and solutions to mid-tier refineries and industrial companies; security products, services, and solutions; power grid engineering services and solutions; federal environmental and engineering services; and transaction and asset valuation services for the power industry. The company was founded in 1969 and is headquartered in Reston, Virginia.