The on-board nitrogen gas thrusters fire pulses of "smoke" as it appears in the sky. These are also know as "thruster puffs". These are visible during these timely launches after sunset and sometimes at night depending on the angles of where the main core is.
The USSF 67 mission gave us a special treat because this is the first time in history a twin booster landing will occur during this post-sunset time. This launch is far from over!
What is known in the launch enthusiast circle as the "jellyfish effect", occurs around two minutes and fifty seconds into the launch. Never before seen by the human species, this creates shock and awe and spectators around me express their thoughts just like it was the 4th of July.
I try to track my camera showing this delightful alien invasion. Yes, that is what this looks like. Soon the thruster puffs extinguish and the boosters continue its free fall decent. Around 6 and a half minutes the booster fires some of its engines to make a correction/decent burn.
Finally the booster fire one last time for its landing burn and gracefully touchdown on landing zones 1 and 2 at the Cape Canaveral Air Force Station. Of course, boom boom boom follows as the sonic booms carry ever so slowly through the speed of sound limitations to my microphone. And there we have it. A historical Falcon Heavy launch worth seeing no matter who you are, where you live, or how much launches you have been to.
See you on the launch pad!