Maintenance Airmen change a tire on a Minnesota Air National Guard C-130 “Hercules” on the flightline at the Minneapolis – St. Paul international airport, on Oct. 31, 2011 wearing the Battle Dress Uniform on the last official day the Air Force allows BDUs to be worn. From left to right, Technical Sgt. Brad Dahl of the 133rd Maintenance Squadron, Technical Sgt. Dan Whitehead of the 133rd Aircraft Maintenance Squadron and Master Sgt. Tom Heckman, also from 133rd AMXS get the job done. USAF official photo by Senior Master Sgt. Mark Moss