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.
An F-15 Eagle, F-4 Phantom, F-117 Nighthawk, and F-22 Raptor fly in formation over Holloman Air Force Base, NM during the Holloman Air and Space Expo on October 27, 2007. The HASE is a showcase of Air Force capabilities, the 49th Fighter Wing mission and the X Prize Foundation. (U.S. Air Force photo by Senior Airman Russell Scalf)