Operation Nighthawk
A military working dog and its handler approach a vehicle stopped at a checkpoint near one of Tinker’s gates April 3 during Operation Nighthawk. All active duty military entering the installation were asked to take a urinalysis test, and their vehicles were searched by agents from the Air Force Office of Special Investigations. Civilian’s vehicles were inspected with a military working dog. (Air Force photo/Micah Garbarino)