U.S. Marine Corps Cpl. Elmer Araiza, a heavy equipment operator with Marine Wing Support Detachment 31, measures the distance of simulated damage found on the flight line during Integrated Training Exercise (ITX) 1-18 aboard Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Oct. 30, 2017.
ITX is a large-scale, combined-arms training exercise intended to produce combat-ready forces capable of operating as an integrated Marine Air Ground Task Force. (U.S. Marine Corps photo by Staff Sgt. Kowshon Ye) Original public domain image from Flickr