Video: UH-60 Helicopter WeedWacker

It looks like this pilot, in an attempt to show off for the assembled crowd, came in too fast and pulled too much pitch. The resulting decrease in rotor RPM caused a high speed descent toward the tree line. You can tell after he "lands" that the helicopter's rotor and engine are screaming; obviously an attempt to pull power before touchdown. Moral: Don't show off in an aircraft. (Note the announcer saying everything is normal!)