sentences:  At the time of inactivation, the 6594th was staffed by 95 officers and 409 enlisted personnel and was supported by 16 US Civil Service personnel.On 15 January 1985 an HH-53 helicopter, call sign Arris 01, from the 6594th Test Group crashed while attempting a shipboard rescue mission 544 miles northwest of Honolulu.All seven crew members were killed