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The U.S. Navy created a "nuclear weaponsman" (NW) rate for enlisted personnel in 1958. In 1961, it created the "gunner's mate technician" rating for enlisted personnel who previously held the NW rate. The gunner's mate technician rating in turn became the "weapons technician" rate in 1986.
References
^ "Navy Ratings". www.bluejacket.com. December 2014. Retrieved December 2, 2014.