Denali Park Superintendent Paul Anderson said Saturday it's the first fatal attack in the park's history.
"Three concussions on one Sunday is nothing new," said Paul Anderson, an attorney who tracks the concussion lawsuits at NFLConcussionLitigation.com. "There were probably just as many prior to [the return-to-play protocol's adoption in] 2009, but nobody was really talking about concussions. Concussions weren't even part of our lexicon. Now it's a polarizing term."