Leidos Holdings, Inc. (Leidos) is a holding company. Leidos is an applied technology company. The Company, through its subsidiary, Leidos, Inc. delivers solutions and services that leverage data analytics, systems integration and cybersecurity across three markets: national security, health and engineering. Its services are provided to agencies of the United States Department of Defense (DoD), the intelligence community, the United States Department of Homeland Security, and other United States Government civil agencies, state and local government agencies, foreign governments and customers across a range of commercial markets. The Company operates in three reportable segments: Health and Engineering (HES), National Security Solutions (NSS), and Corporate and Other.