This is the XB-70 aircraft and it's accident.

Air To Air Video For The Test Flight Of The XB-70 Valkyrie

The Video For The Test Flight Of The XB-70 Valkyrie.

Footage of the 6-engined XB-70 Valkyrie, a 1960s coldwar supersonic strategic nuclear bomber. Features footage of it's maiden flight, wheel lockup and flameout, and it's infamous collision with an F-104 in 1966.

The XB-70 Valkyrie was a nuclear-armed bomber designed for the USAF's SAC in the 1950s. A 6-engined aircraft able to fly at Mach 3 at high altitudes (74,000 ft), which would have allowed it to avoid defending interceptors, the only effective anti-bomber weapon at that time. The cost of the aircraft ($1.5Bn USD), the development of ICBMs and the first effective anti-aircraft missiles led to the cancellation of the program in 1961.

Courtesy of *******www.top10amazing**** -Please view and comment on it..:)10)F-111 Aardvark.........................1,650 mph 9)MiG-31 Foxhound......................1,863 mph 8)F-15 Eagle..................................1,875 mph 7)XB-70 Valkyrie............................2,056 mph 6)X-2...............................................2,094 mph 5)MiG-25R Foxbat-B.....................2,170 mph 4)SR-71 Blackbird........................2,269 mph 3)X-15.............................................4,510 mph 2)X-43A..........................................7,546 mph* 1)Space Shuttle..........................17,500 mph**