A 3 in. gun on my ship has opened fire. This is one of the guns that defended USS Biddle against an attack by five MIGS in the north part of the Gulf of Tonkin in July 1972. Terrier missiles were fired, as were the 3 in. guns and the 5 in. gun. A full account of the action is in my book, Hard Charger! The Story of the USS Biddle (DLG-34).