This question is for Mr. McCormack.
You have a ton of experience both on the Olympic side and with a number of other professional sports. What rule changes do you see should be implemented that would lead to fewer concussions in the first place? Once again, prevention is, I think, the number one goal we all have to look towards.
Also, are you finding there's a lot of push-back from professional sports whereby, if it weren't there, you could see that change would occur to the rules?