U.S. Air Force Chief Master Sgt. Dwight Hardy, left, with the 509th Munitions Squadron, drinks water from his canteen while wearing his M50 chemical mask during a chemical, biological, radiological and nuclear training session, Nov. 13, 2012, at Whiteman Air Force Base, Mo. (U.S. Air Force photo by Airman 1st Class Bryan Crane/Released)
Airman 1st Class Bryan Crane
Taken on 13 November 2012
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