Hill AFB EM Flight adapts to AFI changes
Airman 1st Class Vincent Duller, an emergency management instructor assigned to the 775th Civil Engineer Squadron, assists an Airman with the M-50 gas mask during CBRN (Chemical, Biological, Radiological, and Nuclear) Awareness and Survival Skill Class, Hill Air Force Base, Utah, Dec. 5, 2017. (U.S. Air Force photo by R. Nial Bradshaw)

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Photo by: r. nial bradshaw |  VIRIN: 171205-F-OD616-0008.JPG