An F/A-18C Hornet breaks the sound barrier while making a high-speed pass close to the Nimitz-class aircraft carrier USS John C. Stennis (CVN 74) during an air power demonstration.
B1 bomber breaking the sound barrier. I've seen & heard this in person numerous times... Sounds like the worlds largest cannon was just fired, but it's really cool to see. Smaller aircraft breaking the sound barrier are not as impressive as seeing & hearing this big girl doing it.