The 2 side boosters on the Falcon Heavy each had 3 sonic booms as various legs & flaps deployed. There’s a shot 6 minutes in here of the cameramen on top of the building who have ALREADY watched the boosters land, and are just waiting for the slow old speed-of-sound to send them the BOOM-BOOM-BOOM! BOOM-BOOM-BOOM! Being there must be such an adrenaline rush. I think I should add watching a BFR launch to my bucket list.