Thundering Third kicks off final Mountain Exercise - U.S. Marine Pfc. Adam Gerald provides security during Mountain Exercise 2014 aboard Marine Corps Mountain Warfare Training Center in Bridgeport, Calif., Sept. 7, 2014. Gerald, 20, is from Dallas, and is a radio operator with 1st Platoon, Lima Company, 3rd Battalion, 1st Marine Regiment. Marines with 3rd Battalion, 1st Marine Regiment will become the 15th Marine Expeditionary Unit’s ground combat element in October.
Photo by Sgt. Emmanuel Ramos
by 15th Marine Expeditionary Unit http://flic.kr/p/p9j99y