A 366th Training Squadron civil engineer apprentice course student communicates to her wingmen using hand signals at Sheppard Air Force Base, Texas, March 19, 2019. This signal means to stop reeling in the line of the arresting system. The mobile aircraft arresting system is made to slow down aircraft that land in rugged locations, turning fields or freeways into runways. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)