Firing a Mortar Round As seen through a night-vision device, Army mortarmen fire a 252A1 81 mm mortar system during a live-fire exercise as part of Exercise Rock Sokol at Pocek Range in Postojna, Slovenia, March 10, 2016. Army photo by Davide Dalla Massara SHARE: Download: Full Size (1.7 MB) Tags: Slovenia, postojna, Soldiers, Army Credit: Davide Dalla Massara VIRIN: 160310-A-DO858-019A.JPG Photo Gallery