COMBAT OUTPOST SHUKVANI, Afghanistan, Aug. 22, 2011 – As a torrent of bullets whizzed past their heads, the Marines in Observation Post 8 quickly dropped to the ground, narrowly avoiding what could have been their deaths. As they lifted themselves off of sandbags covering the bottom of the small bunker, they looked up to see Marine Corps Staff Sgt. Christopher Sharp smiling down at them. Marine Corps Staff Sgt. Christopher Sharp prepares for Operation Black Sand in an observation post in the southern portion of the Musa Qalah district of Afghanistan’s Helmand province, Aug. 5, 2011. U.S. Marine Corps photo...