U.S. soldiers plan their next movement during Operation Viper Shake in Korengal Valley, Afghanistan, April 21, 2009. The soldiers are assigned to the 1st Infantry Division's Company C, 1st Battalion, 26th Infantry Regiment. U.S. soldiers plan their next movement during Operation Viper Shake in Korengal Valley, Afghanistan, April 21, 2009. The soldiers are assigned to the 1st Infantry Division's Company C, 1st Battalion, 26th Infantry Regiment. SHARE: Download: Full Size (2.9 MB) Tags: photo essays Credit: VIRIN: 407379-I-VKJ70-093.jpg Photo Gallery