Leidos, formerly known as Science Applications International Corporation (SAIC), is an American defense, aviation, information technology, and biomedical research company headquartered in Reston, Virginia, that provides scientific, engineering, systems integration, and technical services. Leidos works extensively with the United States Department of Defense (4th largest DoD contractor FY2012), the United States Department of Homeland Security, and the United States Intelligence Community, including the NSA, as well as other U.S. government civil agencies and selected commercial markets.
Leidos has four central divisions: Civil, Health, Advanced Solutions, and Defense & Intelligence. The Civil Division focuses on integrating aviation systems, securing transportation measures, modernizing IT infrastructure, and engineering energy efficiently. The Health Division focuses on optimizing medical enterprises, securing private medical data, and improving collection and data entry methods. The Advanced Solutions Division is centered around data analysis, integrating advanced defense and intelligence systems, and increasing surveillance and reconnaissance efficiency. The Defense & Intelligence Division focuses on providing air service solutions, geospatial analysis, cybersecurity, intelligence analysis, and supporting operations efforts.On September 27, 2013, SAIC changed its name to Leidos and spun off a new and independent $4 billion government services and information technology company which retained the Science Applications International Corporation name; Leidos is the direct successor to the original SAIC. Before the split, Leidos employed 39,600 employees and reported $11.17 billion in revenue and $525 million net income for its fiscal year ended January 31, 2013, making it number 240 on the Fortune 500 list. In 2014, Leidos reported US$5.06 billion in revenue.In August 2016, the deal to merge with the entirety of Lockheed Martin's Information Systems & Global Solutions (IS&GS) business came to a close, more than doubling the size of Leidos and its portfolio, and positioning the company as the global defense industry's largest enterprise in the federal technical solutions sector. As of December 2017, the company has 32,000 employees. In 2017, Leidos reported US$10.17 billion in revenue.