Getting Pointers Army Staff Sgt. David Riley, right, instructs Army Pfc. Miranda Argueta during M249 light machine gun training at Joint Base Elmendorf-Richardson, Alaska, Feb. 23, 2018. Riley and Argueta are assigned to the 17th Combat Sustainment Support Battalion. Air Force photo by Alejandro Peña SHARE: Download: Full Size (1.57 MB) Tags: Northcom, Northern Command, Soldiers, Army, training Credit: Alejandro Pena VIRIN: 180223-F-YH552-0057A.JPG Photo Gallery