MOUNTAINTOP SECURITY A U.S. Marine scans a mountaintop from Observation Post Athens in Afghanistan's Helmand province, Nov. 28, 2013. The Marine is assigned to 3rd Battalion, 7th Marine Regiment, which provided security for personnel on Forward Operating Base Zeebrugge. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 979857-S-XVA39-376.jpg Photo Gallery