Ice Drilling Army paratroopers use an auger to drill a hole in river ice as they prepare to construct a bridge across the Tanana River at Donnelley Training Area, Alaska, Jan., 21, 2021. The bridge is being built in preparation for Exercise Arctic Warrior. SHARE: Download: Full Size (4.08 MB) Tags: Army Credit: Army Staff Sgt. Alex Skripnichuk VIRIN: 210120-A-DU810-472.JPG Photo Gallery