Push Up! - Marines with the 22nd Marine Expeditionary Unit participate in an endurance course at Marine Corps Base Camp Lejeune, N.C., Oct. 11, 2013. MEU Marines and sailors participated in the course to increase readiness and esprit de corps.
(U.S. Marine Corps photo by Lance Cpl. Caleb McDonald/Released) by United States Marine Corps Official Page http://flic.kr/p/gTifEf