National Archives and Records Administration - ARC Identifier 4524879 / Local Identifier 330-DVIC-612249 - In the Shadow of History - Department of Defense. Office of the Secretary of Defense. (09/18/1947 - ).  The Office of Special Investigations (OSI) Story. Synopsis: This video traces the history of the Air Force Office of Special Investigations (OSI) from its roots in 1948 through the present day. It captures OSI’s evolution, values, and accomplishments. It puts special emphasis on the quality of the people in OSI, their adherence to organizational and moral ethics, their loyalty to OSI, the Air Force, and the OSI code of ethics which sets an agent apart from other Air Force members. It uses still and motion pictures, narration, and patriotic music to instill a sense of pride in the organization. Purpose: To instill a sense of pride in the Air Force and specifically the Office of Special Investigations. To tell the Air Force OSI story to internal and external publics. To serve as a recruiting tool to attract quality people. -