In January 1966, a United States Air Force B-52 bomber collided with a refueling plane off the coast of Spain, resulting in the loss of four hydrogen bombs. One bomb was reported to be largely intact, while the others were scattered across the ocean floor. This incident, known as the Palomares incident, raised serious safety concerns regarding nuclear weapons and their impact on global security. After an extensive search that involved naval ships and aircraft, the underwater recovery efforts culminated on March 17, when the Deep Submergence Vehicle (DSV) Alvin successfully located one of the missing bombs on the seabed of the Mediterranean.The DSV Alvin, a pioneering submarine designed for deep-sea exploration, provided vital information about the underwater landscape while conducting the search. The discovery of the hydrogen bomb not only marked a significant achievement in the recovery operation but also underscored the complexities and challenges of locating military equipment in oceanic environments. The U.S. Navy and other agencies then devised plans to recover the bomb, which was later described as one of the most important underwater recoveries in military history. The situation remained tense, highlighting the potential environmental hazards and national security implications of misplaced nuclear arsenals.