Firefighters from the 4th Civil Engineer Squadron listen to Eric Stroud, instructor with Fire and Rescue Concepts, as he explains contact points of a main rescue line during a simulated elevated rescue attempt, Oct. 30, 2017, at the training tower at Seymour Johnson Air Force Base, North Carolina. This training session was part of a 10-day training of ropes and confined-space rescues, where about 15 firefighters from the 4th CES were certified on various rescue operations. (U.S. Air Force photo by Tech. Sgt. David W. Carbajal)