Transition Day
Airman Joshua Walk (right), assists Staff Sgt. Douglas D'Agostino, both from the 4th Aircraft Maintenance Squadron, in taking off his mask hood at the contamination control area on Seymour Johnson Air Force Base, N.C., Dec. 7, 2009. The buddy system is used when completing decontamination tasks so contamination doesn't spread when removing equipment. (U.S. Air Force photo/Senior Airman Ciara Wymbs)