This is video from my L2 cert flight on 9/8/18 through Tripoli, slowed down to 30% of the original video speed. I flew a Cesaroni K820 in a HyperLOC 835 kit I built earlier this year. The rocket passed mach 1 on its way up to a 9100ft apogee before coming back down about 3/10 of a mile away from the launch site.