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U.S. Air Force Staff Sgt. Joseph Bonita,18th Aerospace Medicine Squadron NCO in charge of environmental health, tests a water sample while wearing the Battle Dress Uniform on Kadena Air Base, Japan, Oct. 31. The BDU was in service for nearly three decades and had a final wear date of Oct. 31, 2011. (U.S. Air Force photo/Staff Sgt. Christopher Hummel/released)