Obstacle Explosive Soldiers run to place an explosive on a concertina wire obstacle at Grafenwoehr Training Area, Germany, Aug. 16, 2019, during exercise Rock Shock Two, a combined live-fire exercise that tests squad capabilities in day and night conditions. SHARE: Download: Full Size (1.04 MB) Tags: Army Credit: Army Sgt. Henry Villarama VIRIN: 190816-A-AR102-013C.JPG Photo Gallery