SOUTHWEST ASIA -- Senior Airman James McGregor scans the horizon for potential threats, preparing for a convoy operation. Airman McGregor recently graduated from a training course designed to teach transportation Airmen how to survive during convoy operations in potentially hostile locations. He is a vehicle operator deployed from the Air Force Reserve's 939th Air Refueling Wing at Portland International Airport. (U.S. Air Force photo by Capt. Tom Knowles)