Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Kidd-class destroyer - The Kidd-class guided missile destroyers (DDGs) were a series of four warships based on the Spruance class destroyers. The Kidds were designed as more advanced multipurpose ships in contrast to their predecessor's focus on anti-submarine warfare adding considerably enhanced anti-aircraft capabilities. Originally ordered for the former Imperial Iranian Navy the contracts were canceled when the 1979 Iranian Revolution began and the ships were completed for the U.S. Navy.
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