U.S. Marine Corps Challenge Reconnaissance competitors

U.S. Marine Corps Challenge Reconnaissance competitors Chief Warrant Officer 4 Anderson, left, and Capt. Nyehuis, representing Lance Cpl. V. R. H. Lu, race through the reconaissance training center obstacle course during Challenge Reconnaissance on Camp Pendleton, Calif., April 27, 2017. Challenge Recon is a memorial event held, in conjunction with the Recon Challege, where Marines in any military occupation specialty in honor of those killed in action. In this challenge competitors hike a total of 24 miles, stoping at 10 checkpoints that consist of live fire ranges, pool events, obstacle courses. (U.S. Marine Corps photo by Lance Cpl. Brooke Woods)