Good Stuff Rick, these stunts take alot of time to master, ...... ever heard or seen Parkour??? IN all these areas of stunt, practice til perfect, then One's usually as is the norm, gets their share of bumps, bruises, even broken necks.......
This is the kinda' stuff, which makes Young Men, ache in pain when they hit their mid 40s, then some.......
I've seen this stuff before and it's amazing when done well... but I recall it having a different name (one I can't recall right now). Anyway, here's a wiki link on Parkour... http://en.wikipedia.org/wiki/Parkour