Airman 1st Class James Ash, 28th Operations Support Squadron aircrew flight equipment technician, removes protective covers off of Lt. Col. Jason Yeatts, 28th Operations Group deputy commander, during aircrew chemical defense ensemble training at Ellsworth Air Force Base, S.D., May 29, 2014. The suit consists of a protective respiratory mask, undergarments and gloves. (U.S. Air Force photo by Senior Airman Anania Tekurio/Released)