Force carefully managed the news about the American departure from France, and the attendant problems of an integrated NATO air defense for western Europe and the decrease in tactical airpower. However, the news media were focusing on Vietnam, so the removal of NATO forces from France went virtually unreported in the US. During 1966–67 all USAF offices and facilities in France were closed and personnel and equipment moved to other NATO countries. The last USAFE activities were the 1630th Air Base Squadron at Orly Airport and the Paris Administration Office. Both were closed in June 1967. A C-47 variant, the C-117B "Super Skytrain", was the last USAF aircraft to depart France on 31 May 1967. With the French departure, a major reorganization of USAFE was needed. The 49th TFW's three squadrons at Spangdahlem Air Base, and the 417th TFS of the 50th TFW at Hahn Air Base, were recalled to the US. Although the squadrons were relocated to the US, they were still part of USAFE's permanent force. According to the Department of Defense, these squadrons were 'dual-based'; they could return to their European bases at any given moment without lengthy preparations being necessary. During 1967, the 49th TFW's three squadrons flew back to the US where they were stationed at Holloman Air Force Base, New Mexico. The 417th TFS did not return to the US until 1968, when the squadron was stationed at Mountain Home AFB, Idaho. In 1968, the four squadrons switched over completely to McDonnell Douglas F-4 Phantom IID fighter-bombers and then undertook intensive preparations for their new role within USAFE. The primary task of the four dual-based squadrons was to carry out Project Crested Cap. Crested Cap was the Air Force part of the Army's Exercise REFORGER, during which Army and Air Force units from the U.S. mainland would be deployed to Europe for Allied Forces Central Europe exercises. Most of the heavy equipment such as armoured vehicles, artillery, etc., were shipped by sea to exercise that transportation component. Troops were flown via military and contract transport aircraft. Although the withdrawal of USAFE forces from France was completed in 1967, it took until the mid-1970s until USAFE fully realigned its forces in Europe. Zweibrücken AB in West Germany and RAF Upper Heyford in England came under USAFE control within the next several years. Older reconnaissance and fighter aircraft were redeployed from France to Southeast Asia to