Nuclear technology the element plutonium possesses an isotope that is sufficiently unstable for this process to be usable. Terrestrial plutonium does not currently occur naturally in sufficient quantities for such use, so it must be manufactured in a nuclear reactor. Ultimately, the Manhattan Project manufactured nuclear weapons based on each of these elements. They detonated the first nuclear weapon in a test code-named "Trinity", near Alamogordo, New Mexico, on July 16, 1945. The test was conducted to ensure that the implosion method of detonation would work, which it did. A uranium bomb, Little Boy, was dropped on the Japanese city Hiroshima on
393d Bomb Squadron 1969–Jun 1971. Re-equipped with General Dynamics FB-111 nuclear capable medium bomber in 1970; operated until retirement in 1990. It was reactivated in 1993 as first operational Northrop Grumman B-2 Spirit stealth bomber squadron. 393d Bomb Squadron The 393d Bomb Squadron is part of the 509th Bomb Wing at Whiteman Air Force Base, Missouri. It operates Northrop Grumman B-2 Spirit nuclear-capable strategic bomber aircraft. The 393d Bombardment Squadron is the only United States Air Force squadron to carry out a nuclear attack on an enemy in combat. During World War II, its aircraft attacked Hiroshima on 6 August 1945 and Nagasaki,