Oregon National Guard training
Oregon Army National Guard Soldiers with the 162nd Engineer Company, 1249th Engineer Battalion, set off a charge of 128 pounds of ammonium nitrate and C4 explosive as a "cratering charge" during their annual training at Yakima Training Site, Wash., June 20. The explosion had an equivalent of 220 pounds of TNT. The unit spent two weeks training with different types of explosives, and conducted weapons qualification on the M240 "Bravo" machine gun and the M2 .50-caliber machine gun. Photo by Master Sgt. Nick Choy, Oregon Military Department Public Affairs.