A U.S. Airman assigned to the 20th Civil Engineer Squadron constructs a fence for a new MQ-9 site at Shaw Air Force Base, S.C., Dec. 12, 2018. Airmen began construction following results from an environmental assessment, using available equipment to prevent additional costs to the government and to reduce time waiting for new equipment to be delivered. (U.S. Air Force photo by Airman 1st Class Kathryn R.C. Reaves)