This video is of a two-stage rocket at Balls 28 (September 2019). The rocket achieved an altitude of over 142,000 feet. One notable aspect of the flight was that it was completely controlled by the "Kate 2" altimeter/gps system. You can hear Kate describing the flight in real time. Although the altitude was somewhat lower than expected, the flight was otherwise completely successful with full recovery of both stages. This video is a little longer than my normal videos, but there is content throughout, so don't give up on it too soon.