Just something I remember from a few years ago. The only thing that I ever knew to make a double sonic boom... Was the Space Shuttle when it was re-entering the atmosphere.
I remember from watching enough NASA TV that the shuttle always made a double sonic boom when it came in over Cape Canaveral.
Just a thought.
Those are just booms from the craft returning from military missions to the moon and Mars. No biggie.
I’ve heard the double shuttle boom. I got up early one morning while at Disney World and sat out on our balcony and listened. It was cloudy, so, I couldn’t see it.
It’s the difference from when the nose of the craft breaks the sound barrier vs when the stabilizer does.