U.S. Air Force Staff Sgt. Kyle Hall, 355th Operations Support Squadron aircrew flight equipment technician, describes flight equipment maintenance to El Salvadoran Air Force Tech. Sgt. Moisés Rolando Serrano Borjorquez, aviation electrician, First Sgt. Raul Mauricio Molina Cedillos, aviation technician and U.S. Air Force Senior Master Sgt. Roberto Vasquez, 12th Air Force (Air Forces Southern) operations, plans and requirements superintendent, during a Subject Matter Expert Exchange at Davis-Monthan Air Force Base, Ariz., March 7, 2018. Air crew flight equipment airmen are responsible for ensuring that all air crew flight and safety equipment is operating properly. They maintain equipment items like night vision goggles, flight helmets and oxygen masks and pack emergency items like parachutes and survival kits.(U.S. Air Force photo by Staff Sgt. Angela Ruiz)