Master Sgt. Jeremy Lawson, 36th Civil Engineer Squadron heavy repair section chief, signals to a crane operator to lift a new Barrier Arresting Kit on the flight line at Andersen Air Force Base, Guam, April 26, 2021. According to the technical order, BAK-12s are overhauled and replaced every ten years. The BAK-12 feeds a cable across the flight line and, in the case of an in-flight emergency, acts as a mechanical barrier that rapidly decelerates a landing aircraft. (U.S. Air Force photo by Staff Sgt. Ryan Brooks)