 That tour of duty came in the winter of 1970 and 1971 and consisted of duty as plane guard, as SAR picket, and as naval gunfire support ship.The last deployment began in January 1973, after more than 20 months of normal 1st Fleet operations which included a four-month overhaul at the beginning of 1972.However, soon after she arrived in the Far East, the Vietnam ceasefire ended American involvement in the conflict.