SR-71 Break-Up
http://www.alexisparkinn.com/sr-71_break-up.htm

Among professional aviators, there's a well-worn saying: Flying is simply hours of boredom punctuated by moments of stark terror. And yet, I don't recall too many periods of boredom during my 30-year career with Lockheed, most of which was spent as a test pilot.

"My aircraft disintegrated around me at Mach3, 78,000ft" (hat tip to Dan Kuper for the link)