Balls 8
Balls 8 is a NASA Boeing NB-52B mothership which was retired in 2004 after almost 50 years of flying service with NASA. The aircraft is famous for dropping the X-15 aerospace research vehicle on 106 of the 199 X-15 program flights. == Introduction == Boeing NB-52B Stratofortress, Air Force 52–0008, operated from Edwards Air Force Base for 45 years.