The show you aired today about seniors self Defense was great to get them moving, but you really think that they should be confident in learning to take on an attacker with a knife? You sort of promote that in your little docu! Have you lost your mind. Me as an ex cop, international criminal investigation department and drug enforcement agency would rather safe my life and not fight back, instead run!!! You are crazy thinking an 80 year old could fight someone with a knife. What were you thinking by airing this??????