a fact not lost on troy aikman, the former cowboys' quarterback, whose career was cut short by concussionso surprised many, when he said the following, during a recent radio interview. >> you know, if i had a 10-year-old boy, i don't think i'd be encouraging him to go out and play football. and so, i wonder where football will be 20 years from now, in light of some of our youth that may not get involved with the sport because of that injury. >> reporter: ted and tammy plevertes agree. >> i just couldn't or did not ever think, to be honest with you, that this would ever happen from football. >> reporter: on november 5th, 2005, their son preston, a then-19-year-old, 6'2", 230-pound linebacker at lasalle university, was dropped by a thunderous collision, during a game at duquesne. he never got up. preston plevertes was cleared to play while still suffering the effects of a previous concussion. returning just five days before the hit that would change his life. >> i couldn't believe it. i was saying i started to cry. >> reporter: emergency surgery saved preston's life, or what remained of it.