U.S. Air Force Senior Airman Brandon Ambrose, 633rd Civil Engineer Squadron electrical systems journeyman, performs a low crawl during Prime Base Engineer Emergency Force training at Joint Base Langley-Eustis, Virginia, Nov. 15, 2018. Members assigned to the 633rd CES routinely participate in home station combat skills training in preparation for deployment. (U.S. Air Force photo by Airman 1st Class Monica Roybal)