 In 1985, for the first time ever, Seventeenth Air Force brought together all European-based electronic warfare aircraft under a single command when it activated the 65th Air Division and the 66th Electronic Combat Wing at Sembach Air Base.All of these units were inactivated in the early 1990s.The air bases at Hahn, Bitburg, Wiesbaden and Zweibrücken were closed by USAFE and turned over to the German government by 1993.