A U.S. soldier provides security from an elevated position at the Khyber Border Coordination Center near Torkham Gate at the Afghanistan-Pakistan border in Afghanistan's Nangarhar province, Jan. 4, 2015. The soldier is assigned to the 3rd Cavalry Regiment, Train, Advise, Assist Command East security force. A U.S. soldier provides security from an elevated position at the Khyber Border Coordination Center near Torkham Gate at the Afghanistan-Pakistan border in Afghanistan's Nangarhar province, Jan. 4, 2015. The soldier is assigned to the 3rd Cavalry Regiment, Train, Advise, Assist Command East security force. SHARE: Download: Full Size (0.94 MB) Tags: photo essays Credit: VIRIN: 586457-Y-AEO50-703.jpg Photo Gallery