Airman 1st Class Kyle Denzine, a 20th Operations Support Squadron aircrew flight equipment specialist, checks the seal of his gas mask at Shaw Air Force Base, S.C., Oct. 23, 2015. Denzine, along with other AFE Airmen, practiced the actions they would take if a pilot needs to be decontaminated upon his return to base. (U.S. Air Force photo/Senior Airman Michael Cossaboom)