Pull the pin… see smoke in the wind
Col. Bradley Cochran, vice commander of the 28th Bomb Wing, examines the crater left from the explosives he triggered at Ellsworth Air Force Base, S.D., Nov. 14, 2016. The hole was created by less than five pounds of explosives, which demonstrates the impact small improvised explosive devices can cause. (U.S. Air Force photo by Airman 1st Class James L. Miller)