and preparation, Coontz departed on 6 July 1973 for her first deployment with the United States Sixth Fleet, operating in the Mediterranean Sea. Commander Emery was relieved as Commanding Officer by Commander F.N. Howe on 20 December 1973. In January 1974 Coontz changed home port from Newport to Norfolk, Virginia. She departed 15 November 1974 for a Mediterranean Sea deployment, participating in numerous U.S. and NATO exercises. DDG-40 As part of a major re-designation of several classes of ships, Coontz was redesignated guided-missile destroyer 40 (DDG-40) on 1 July 1975. The ship's next deployment was on 17 January 1976 as part of the Standing Naval Forces Atlantic (STANAVFORLANT). The force operated in Caribbean, U.S. and Canadian waters with ships from four NATO navies prior to a transit to Northern Europe where Coontz visited 8 countries and participated in numerous NATO exercises. Commander Howe was relieved as commanding officer by Commander Silas O. Nunn III on 6 March 1976. Nunn was later relieved as commanding officer by Commander W. P. Martin on 8 April 1978. After a one-year regular overhaul in Norfolk Naval Shipyard, Coontz departed on 21 July 1978 for comprehensive gunnery, missile and Harpoon system qualifications and refresher training at Guantánamo Bay, Cuba. After returning home, Coontz participated in six months of local operations including GULFEX 78 in November 1978. In 1979 she served again with STANAVFORLANT, as flagship, hosting more than 35,000 visitors in 8 NATO countries and participating in various exercises with over 30 NATO ships. STANAVFORLANT operations included areas above the Arctic Circle, in the Baltic Sea, North Sea and the Norwegian Sea. Commander Martin was relieved as Commanding Officer by Commander C.P. Willoz on 28 September 1979. On 14 July 1981, Coontz accidentally fired a live Harpoon missile about off St. Croix. The island was in range of the missile and it was fired toward the island, but a search by Coontz and aircraft from the carrier found no debris. The US Navy concluded that the Harpoon harmlessly impacted the sea since no trace of it was ever found. In the fall of 1981, Coontz deployed again. This cruise included port visits in Western Africa as part of the West African Training Cruise, operations in the Mediterranean Sea and a transit into the Black Sea followed by a port visit to Dubrovnik, Yugoslavia. Commander Willoz was relieved as Commanding Officer by Commander J.P. Reason on