Defensive Duo A machine gunner sights in on targets while working with Army Col. Jay Bartholomees, the commander of the 173rd Airborne Brigade, during a base defense live-fire training exercise in Slovenia, March 13, 2018. Army photo by Lt. Col. John Hall SHARE: Download: Full Size (4.32 MB) Credit: Lt. Col. John Hall VIRIN: 180313-A-VI272-090C.JPG Photo Gallery