U.S. Marines provide security as fellow Marines exit a CH-46 Chinook helicopter. U.S. Marines provide security as fellow Marines exit a CH-46 Chinook helicopter while conducting security and ambush patrols in the Sarkani Valley of Afghanistan on May 7, 2005. The Marines of India Company, 3rd Battalion, 3rd Marine Regiment are conducting security and stabilization operations in the valley. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 538934-K-LTE61-375.jpg Photo Gallery