Leidos Holdings, Inc. (Leidos) is a holding company. Leidos is an applied technology company. The Company, through its subsidiary, Leidos, Inc., is engaged in delivering solutions and services that leverage data analytics, systems integration and cybersecurity across three markets: national security, health and engineering. The Company operates in segments: National Security Solutions (NSS); Health and Engineering (HES), and Corporate and Other. National Security Solutions provides solutions and systems for air, land, sea, space and cyberspace for the United States intelligence community, the DoD, the military services, the DHS and government agencies of United States allies abroad. Leidos' Health and Engineering businesses' customers include the United States federal government, state and local governmental agencies, foreign governments and commercial enterprises in various industries.