The United States tests its first thermonuclear device at Eniwetok in the Marshall Islands. The device, code-named “Mike,” has a yield of 10.4 million tons of TNT, 1,000 times more powerful than the bomb dropped on Hiroshima in World War II.
An air base in England used by American bombers to strike Iran was the target of a suspected bomb plot, U.K. officials said Sept. 27.