The 6594th Test Group was a United States Air Force Unit stationed in Hawaii at Hickam Air Force Base from 1958 until it was inactivated in 1986. The 6594th Test Group was established in 1958 to support U.S. Air Force Systems Command missile and space development operations in the Western Pacific area. It also provided support to the U.S. Coast Guard and Honolulu Joint Rescue Coordination Center on an as-available, non-interference basis.