The sun sets on Hickam Air Force Base, Hawaii, base operations center Wednesday evening as Staff Sgt. Thomas C. Dickens, a crew chief assigned to the 735th Air Mobility Squadron, prepares a 15th Airlift Wing C-17 for an Air Mobility Command mission. Tonight when the sun sets SSgt. Dickens will be a part the 515th Air Mobility Operations Wing at Hickam AFB. (U.S. Air Force photo/MSgt. Robert Burgess)