A M117 bomb detonates on an uninhabited island off the coast of Guam June 26, 2015. Airmen from the 20th Expeditionary Bomb Squadron, with the help of 36th Munitions Squadron Airmen, dropped the final M117 bomb in the Pacific Air Force’s inventory as part of a training mission to ensure the security and stability of the Indo-Asia Pacific region. (U.S. Air Force photo by Airman 1st Class Joshua Smoot/Released)