Howitzer Blast

The earth shakes as an M109A6 Paladin fires a gas propelled 155mm Howitzer round through the enormous canon, the biggest of Battle Kings arsenal as 1-9 Field Artillery, 2nd Heavy Brigade Combat Team, 3rd Infantry Division, conducts their gun calibration at Destiny Range in Mosul, Iraq, April 23.
Photo by Spc. Gregory Gieske