A U.S. Marine with the 3rd Battalion, 7th Marine Regiment stands guard at Observation Post Athens in Helmand province, Afghanistan, Nov. 28, 2013.
The observation post provided a 365-degree view of the area surrounding the village of Kajaki and Forward Operating Base Zeebrugge. (DoD photo by Cpl. Paul Peterson U.S. Marine Corps/Released). Original public domain image from Flickr