Staff Sgt. Kandice Caputo checks the seal on Staff Sgt. Justin Steidler's gas mask while wearing mission-oriented protective posture gear during a chemical, biological, radiological, nuclear explosive scenario June 24 on Charleston AFB. Airmen from across the base are participating in a mobility exercise in preparation for the operational readiness inspection in August. Sergeant Caputo is the 437th Civil Engineer Squadron NCO in charge of emergency management training and Sergeant Steidler is a 437th Medical Group medical material craftsman. (U.S. Air Force photo/Airman 1st Class Cynthia Spalding)