Observing Training A range safety officer observes a soldier firing a machine gun at targets during a zeroing range in Orzysz, Poland, April 3, 2017. Army photo by Spc. Nathanael Mercado SHARE: Download: Full Size (1.85 MB) Credit: Spc. Nathanael Mercado VIRIN: 170403-A-DN311-162A.JPG Photo Gallery