Civil engineers with the 316th and 11th Civil Engineer Squadrons put stakes into the ground for the Mobile Aircraft Arresting System during a training event at Fort Indiantown Gap, Pa., March 14, 2023. The MAAS is a rapidly deployed system used to stop aircraft on shorter runways or in contingency situations, and installing the system is one of the many potential competition events at the Readiness Challenge. (U.S. Air Force photo by Kristen Wong)