we would like to invite pellom mcdaniels to weigh in on this issue.so i will turn it over to you. >> before i start, we really want to thank you for having us here. this is our second time back at the festival and it's amazing how huge it's gotten and we are grateful to be here. i will just give you a quick synopsis. digging into the story there had been a lot of good reporting done on the issue of concussions and football prayers to us jumping into the story in 2011. our colleagues at espn have done fantastic work on the issue and ellen at "the new york times" and others. but i think one of the fundamental issues that haven't been really addressed about this is what did the league know and when did he know it and how did it address a problem that was becoming a huge public health crisis not only had the nfl level but the youth level and the pressure of the nfl was rationally quite considerably on this in 2010. the commissioner was called before congress and just hammered by the representative henry waxman are basically raising the question asked of t