Derrick Trotter, Pinkerton Government Services Incorporated gate guard, inspects a semi-truck at the East Gate on Barksdale Air Force Base, La., July 25. The guards inspect vehicles to ensure they are compliant with installation rules and regulations prior to allowing them entry to the installation. (U.S. Air Force photo/Senior Airman Kristin High)(RELEASED)
Derrick Trotter, Pinkerton Government Services Incorporated gate guard, signals a truck to proceed forward for an inspection at the East Gate on Barksdale Air Force Base, La., July 25. The guards inspect vehicles to ensure they are compliant with installation rules and regulations prior to allowing entry to the installation. (U.S. Air Force photo/SeniorAirman Kristin High)(RELEASED)