Are sonic booms a rare occurrence now? Seems to me back in the '60's it was a weekly thing to hear one if not several sonic booms in a lot of places around the USA, that was pretty cool. NASA put a stop to it over land (USA) for commercial aircraft in the early '70's, did they eventually put a stop or reduction to military aircraft too over land? The Space Shuttle, if you were in Florida during landing would create a double sonic boom(s) and that was pretty cool too......

https://www.nasa.gov/sites/default/files/atoms/files/supersonic-student.pdf