U.S. Air Force Office of Special Investigations.

About U.S. Air Force Office of Special Investigations

The Air Force Office of Special Investigations is a U.S. federal law enforcement agency that reports directly to the secretary of the Air Force. OSI is also a U.S. Air Force field operating agency under the administrative guidance and oversight of the inspector general of the Department of the Air Force. By federal statute, OSI provides independent criminal investigative, counterintelligence and protective service operations worldwide and outside of the traditional military chain of command. Proactively, OSI identifies, investigates, and neutralizes serious criminal, terrorist, and espionage threats to personnel and resources of the Air Force, Space Force, and the U.S. Department of Defense, with a goal of protecting the national security of the United States.