SONIC BOOM

I was watching Current TV and learned the search term "Sonic Boom" had just spiked on Google, search terms interest me and this one was too cool not to follow up on! I found the origin had been the Space Shuttle Discovery as it approached Edwards Air Force Base just north of LA.

Perhaps it was in combination with recently watching a documentary (wish I could find a link) on Air Force One. But I had a new enthusiasm for Endeavour. By the way the presidential 747 can break Mach 1, has an identical back-up that fly's every mission, and neither have ever failed a mission. Impressive. On the other hand it only took this picture of Endeavour's landing and a little imagination for me to be impressed: