OPERATION ROCK AVALANCHE Army Sgt. Chad Mohr (left), watches rounds land on target as Spc. David Hooker (right), fires the MK19 grenade machine gun at a known insurgent position Oct. 24, 2007, during Operation Rock Avalanche in Kunar Province, Afghanistan. SHARE: Download: Full Size (0.02 MB) Credit: VIRIN: 317347-Y-WDU85-102.jpg Photo Gallery