Leidos Holdings, Inc. is a Fortune 500 technology, engineering, and science solutions company based in Reston, Virginia. Founded in 1969, Leidos focuses on providing services in defense, intelligence, civil government, health, and homeland security markets. The company employs around 48,000 professionals and reported revenues of approximately $16.7 billion for the fiscal year 2024. Leidos operates through four primary business segments: National Security & Digital, Health & Civil, Commercial & International, and Defense Systems. The company offers a range of solutions, including digital transformation, cybersecurity, mission software, and advanced sensing technologies. Leidos serves a diverse customer base, including the U.S. Department of Defense, various federal agencies, and international clients, positioning itself as a key partner in addressing complex challenges in national security and health.