“The lone S-67 prototype crashed while conducting a low-level aerobatic demonstration at the Farnborough Airshow in September 1974. During a low-level roll maneuver, the nose dropped too close to the ground for safe completion of the maneuver. The aircraft struck the ground in a level attitude and immediately burst into flame. Sikorsky test pilot Stu Craig died on impact, and test pilot Kurt Cannon died nine days later from his injuries.[14] Development work on the S-67 ceased after this accident.”
Hush-Kit 
Sadly…
“The lone S-67 prototype crashed while conducting a low-level aerobatic demonstration at the Farnborough Airshow in September 1974. During a low-level roll maneuver, the nose dropped too close to the ground for safe completion of the maneuver. The aircraft struck the ground in a level attitude and immediately burst into flame. Sikorsky test pilot Stu Craig died on impact, and test pilot Kurt Cannon died nine days later from his injuries.[14] Development work on the S-67 ceased after this accident.”
(source: Wikipedia)
FVH
The American Mil Mi-24?
Imagine one of THESE as SEAL team 6’s ride!
Loved the soundtrack.