U.S. Marines with the Marine Corps Base (MCB) Quantico

U.S. Marines with the Marine Corps Base (MCB) Quantico Color Guard present the colors during the annual Marine Corps Marathon (MCM) Run Amuck at MCB Quantico, Va., June 10, 2017. The Run Amuck is the MCM's messiest mud and obstacle course consisting of a four-mile trail with 21 challenges to include ammo can relay, low crawl, and a mud pit. The event also included a scaled down two-mile version of the course, the Mini Run Amuck. (U.S. Marine Corps photo by Lance Cpl. Cristian L. Ricardo)