sentences:  Assigned to the service group for "Operation Crossroads," the atomic weapons tests in the Marshall Islands, "Creon" arrived at Kwajalein 19 March 1946 and operated there and at the test site until 10 September when she departed for overhaul at San Pedro, California.She served as a repair ship for LSMs and LSM(R)s at San Diego from 15 December 1946 until 27 September 1948.Following an overhaul at Long Beach Naval Shipyard, "Creon" put out from San Diego 10 January 1949 for Kodiak, Alaska to participate in a large-scale cold-weather exercise.