A Devil Pup low-crawls through water while being sprayed by a hose during a mud run aboard Marine Corps Base Camp Pendleton, Calif., July 12, 2015. After the run, Marines assigned to 1st Reconnaissance Battalion, 1st Marine Division, demonstrated their amphibious capabilities and answered questions the Devil Pups had about the recon community. (U.S. Marine Corps photo by Cpl. Will Perkins) - A Devil Pup low-crawls through water while being sprayed by a hose during a mud run aboard Marine Corps Base Camp Pendleton, Calif., July 12, 2015. After the run, Marines assigned to 1st Reconnaissance Battalion, 1st Marine Division, demonstrated their amphibious capabilities and answered questions the Devil Pups had about the recon community. (U.S. Marine Corps photo by Cpl. Will Perkins)