U.S. military observers watch the explosion during Operation Crossroads Baker, a nuclear test conducted on Bikini Atoll on July 25, 1946. This was the fifth nuclear explosion ever, after two other tests and the two bombs dropped on Hiroshima and Nagasaki.(U.S. Department of Defense)
HuffPo’s 30 years of nuclear bomb testing. (via Nuclear Bomb Testing: Images From The First 30 Years Of Tests (PHOTOS))
