Maybe they’re shooting with chi energy... like this “karate master” that claims he can KO people without touching them:
http://www.youtube.com/watch?v=_Z0_n7tGnK0
I have trained under that “karate master” for MANY years and I am close friends with the Chinese guy who does the no touch knockout in the video Leon Jay. His father Wally Jay (RIP) was one of Bruce Lees instructors and closest friends. One of the guys who was knocked out in the video is my present sensei (8th Dan) and good friend. I would suggest that if you don’t believe it that you visit Reading PA and tell George that he’s a fraud. I’m sure he will be happy to demonstrate it for you. Or come to Phoenix
on Feb 15/16th to the Radisson cause Leon Jay will be giving a seminar there ... or my house cause he might be staying with me while he’s here. Knowing Leon he would be quite happy to demo using you as uke