Airman 1st Class Alijah Norris, 374th Civil Engineer Squadron power production technician, aligns pendant support disks at Yokota Air Base, Japan, during an annual certification test, June 1, 2017. The Aircraft Arresting System is a barrier used to catch the arresting hook on fighter aircraft in case of malfunction upon landing or take off. (U.S. Air Force photo by Yasuo Osakabe)