Investigator Michael Lawrence, 436th Security Forces Squadron NCO in charge of investigations and intelligence, and Master Sgt. Anthony Kinnick, 436th SFS chief of standards and evaluations, practice gas mask hydration during a Chemical, Biological, Radiological and Nuclear (CBRN) training session Jan. 31, 2018, at Dover Air Force Base, Del. During a CBRN event, Mission Oriented Protective Posture, or MOPP gear, cannot be removed, so drinking is accomplished through a special port on the gas mask. (U.S. Air Force photo by Staff Sgt. Aaron J. Jenne)
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