Zeroing Sights Army Staff Sgt. Esteban Arenas waits for fellow soldiers to zero out the sights on their M16 rifles on a military shooting range in Landstuhl, Germany, Feb. 25, 2016. Soldiers wore personal protective equipment during the training to help prevent injuries such as traumatic brain injury. DoD photo by Air Force Tech. Sgt. Brian Kimball SHARE: Download: Full Size (0.35 MB) Credit: Air Force Tech Sgt. Brian Kimball VIRIN: 160225-F-QP401-016A.JPG Photo Gallery