U.S. Army 1st Lt. Brian Keller fires his M16 rifle during U.S. Army Europe's Best Junior Officer Competition in Grafenwoehr, Germany, July 24, 2012. Keller is assigned to the 212th Combat Support Hospital. U.S. Army 1st Lt. Brian Keller fires his M16 rifle during U.S. Army Europe's Best Junior Officer Competition in Grafenwoehr, Germany, July 24, 2012. Keller is assigned to the 212th Combat Support Hospital. SHARE: Download: Full Size (2.35 MB) Tags: Photo Essays Credit: VIRIN: 754001-V-WMS09-315.jpg Photo Gallery