MARINE CORPS AIR STATION YUMA, Ariz. -- U.S. Marines conduct a Foreign Object Debris (FOD) walk along the runway at Marine Corps Air Station Yuma, Ariz., June 7, 2021. A FOD walk is conducted routinely to make sure runways are clear from debris that may damage aircraft using it. (U.S. Marine Corps Photo by Lance Cpl Matthew Romonoyske-Bean)