Heavy weight water tank dropped by a U.S. Air Force C-130 Hercules, assigned to 1st Squadron, 91st Cavalry Regiment, 173rd Airborne Brigade, during an airborne operation at the 7th Army Joint Multinational Training Command’s Grafenwoehr Training Area, Germany, April 8, 2015. (U.S. Army photo by Visual Information Specialist Matthias Fruth/released)