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The United States Air Force detonated the first airborne hydrogen bomb on May 21, 1956. The test, codenamed "Shot Cherokee," was part of Operation Redwing. The bomb was dropped from a Boeing RB-52B Stratofortress named Barbara Grace, assigned to the 4925th Test Group (Atomic).
The thermonuclear bomb weighing 6,867 pounds.bomb was released from an altitude of 50,000 feet. Due to a target misidentification, the crew missed the designated aim point by about 4 miles.
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