U.S. Navy sailors and U.S. Marines participate in a motivational "moto" run aboard Camp Bastion, Helmand province, Afghanistan, June 17, 2014. The run was in honor of the 2014 U.S. Navy Corpsman Birthday, which represents 116 years that Corpsmen have provided medical services to the U.S. Navy and U.S. Marine Corps. (Official U.S. Marine Corps photo by Lance Cpl. Darien J. Bjorndal, Marine Expeditionary Brigade Afghanistan/ Released)