U.S. Air Force Airmen, assigned to the 633rd Civil Engineer Squadron, inspect their Joint Service Lightweight Integrated Suit Technology during Prime Base Engineer Emergency Force day training at Joint Base Langley-Eustis, Virginia, Jan. 25, 2018. The Airmen practiced how to wear and inspect their JLIST for different mission oriented protective posture situations. (U.S. Air Force photo by Airman 1st Class Anthony Nin Leclerec)