Members of the 4th Civil Engineer Squadron fire department support and secure a semi-trailer during a vehicle extrication exercise, May 4, 2018, at Seymour Johnson Air Force Base, North Carolina. Because the truck was detached, the weight of the trailer had to be supported so the team could safely remove parts of the trapped vehicle in order to extricate the victim. (U.S. Air Force photo by Staff Sgt. Brittain Crolley)