Spc. Jeremy Burton, armored crewman, assigned to 2nd Squad, 3rd Platoon, Company C., 1st Battalion, 66th Armored Regiment, 1st Brigade Combat Team, 4th Infantry Division, lays in the prone position on cliff overlooking the Arghandab River Valley, Afghanistan, Jan. 31, to provide security for his squad as they climb up the cliff from the valley below.

The very high resolution version of the photo is here.

[ Many thanks to Lance for emailing me the link. ]