U.S. Air Force Technical Sergeant Esteban Calderon, 88th Security Forces Squadron duty flight chief, quires Airman First Class Tanner Roberts, 88th SFS installation entry controller, on his area of responsibility during his duty shift at gate 22B Wright Patterson Air Force Base, Sept 12, 2016. Personnel assigned to this duty verify requests for visitor entry; issue visitor passes, and enforce the installation traffic code. Entry controllers may search and inspect personnel and vehicles, as directed by higher authority. As Air Force ambassadors, installation entry controllers play a vital role on Air Force installations. (U.S. Air Force photo/Al Bright)
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