U.S. Air Force Airman 1st Class Derek Moland, a B-2 Spirit aircraft crew chief with the 509th Aircraft Maintenance Squadron, dons his M50 gas 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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