Soldiers of the U.S. Army Reserve’s 326th Quartermaster Company (Water Storage and Distribution) replace a gasket on the inside of a hose fitting for a water pump in preparation for filling a water buffalo during Warrior Exercise 78-15-01 at Fort A.P. Hill, Va., Jan. 14, 2015. The 326th operates Reverse Osmosis Purification Units, drawing water from a local pond, purifying the water, then moving the water to the training sites here. WAREX is one of several U.S. Army Reserve exercises involving active duty, National Guard, Army Reserve and U.S. Navy personnel. (U.S. Army Photo by Master Sgt. D. Keith Johnson/Released)