A U.S. Air Force Airman signs into the Air Force Office of Special Investigations travel briefing at Langley Air Force Base, Va., July 11, 2013. Before taking leave outside of the U.S., Service members are encouraged to contact AFOSI in advance of the mandatory training, so a specific briefing can be tailored for the location the member is traveling to. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)