EIELSON AIR FORCE BASE, Alaska -- An A-10 Thunderbolt II taxis past the air traffic control tower during RED FLAG-Alaska 11-2 July 11, 2011, Eielson Air Force Base, Alaska. RF-A, a two week long exercise, focuses on aerial combat training for U.S. and allied forces and is conducted within the Joint Pacific Alaska Range Complex, a 67,000 square mile training range. The A-10 is assigned to the 25th Fighter Squadron at Osan Air Base, Republic of Korea (U.S. Air Force photo/Staff Sgt. Christopher Boitz)