Sgt. 1st Class Matthew Kahler supervises and provides security. U.S. Army Sgt. 1st Class Matthew Kahler (left) supervises and provides security for Pfcs. Jonathan Ayers and Adam Hamby while they emplace an M240 machine gun as part of a fighting position in the mountains of Afghanistan's Kunar Province on Oct. 23, 2007. The soldiers are all from 2nd Battalion, 503rd Parachute Infantry Regiment. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 811817-V-NKO59-828.jpg Photo Gallery