Back-to-School Sale. Get 15% off Plus and Awesome accounts, now until September 5th.Upgrade now

A U.S. Army Soldier provides security as a UH-60 Blackhawk lands outside of the Usmankhel Village, Kandahar Province, Afghanistan, 18 Dec., 2011. (U.S. Army photo by Spc. Kristina Truluck/Released)

Discover more inspiring photos like this one.

Download the FREE 500px app Open in app