Changing cables
U.S. Air Force Staff Sgt. Timothy Shearer, left, and Airman 1st Class Travis Green, right, 20th Civil Engineer Squadron power production craftsman and apprentice, tie down an aircraft arresting system cable at Shaw Air Force Base, S.C., Dec. 23, 2016. The power production flight is responsible for maintaining and replacing the aircraft arresting systems, which help keep 20th Fighter Wing pilots safe in the event of an emergency. (U.S. Air Force photo by Airman 1st Class Destinee Sweeney)