GUN GUIDANCE U.S. Army Pfc. Heather De La Vega fires her M240B machine gun as she takes direction from U.S. Sgt. John Maziarz and U.S. Sgt. Isiah Selby on Camp Mike Spann, Afghanistan, Feb. 7, 2012. De La Vega is a personal security detail medic, and Maziarz and Selby are personal security detail soldiers. All are assigned to Headquarters Company, 37th Infantry Brigade Combat Team. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 337411-G-YFY34-326.jpg Photo Gallery