In 1954, the United States conducted a series of nuclear tests known as Operation Castle, with the most powerful being the Castle Bravo test. Detonated on Bikini Atoll in the Pacific, Castle Bravo produced an unexpected 15-megaton explosion, making it the largest nuclear test ever carried out by the U.S. This test marked a critical point in the development of thermonuclear weapons during the Cold War. A B57-B Canberra, a reconnaissance aircraft used for high-altitude missions, may have been empl