>> t plus 30 seconds if you can hear me over the cheering, "falcon heavy" heading to space on our test flight, building on the history of "saturn 5 apollo," returning to interplanetary mission. we're getting ready to throttle down. [ cheering ] >> supersocvehicle supersonic. >> you heard the callout. vehicle is supersonic. side boosters are now throttling back up to full power. >> reached maximum dynamic pressure. >> we're past max q, the period of maximum loads on the vehicle. next up we'll be waiting for the