A U.S. Army paratrooper assigned to 2D Battalion, 503rd Infantry Regiment and the 54th Brigade Engineer Battalion, 173rd Airborne Brigade looks for opposition forces during Exercise Rock Shock Two, a battalion level combined arms live fire exercise, at Grafenwoehr Training Area, Germany, August 12, 2019. The 173rd Airborne Brigade is the U.S. Army Contingency Response Force in Europe, capable of projecting ready forces anywhere in the U.S. European, Africa or Central Commands' areas of responsibility.