system
A chat on subreddit /r/NoStupidQuestions
human
He died. Well, his heart stopped beating on the field, and CPR plus an AED brought back a rhythm.   

Broken legs,  even spectacular ones like Joe Theismann are "injuries" that they are used to.   

They aren't used to dealing with people that don't have heartbeats.
gpt
Plus it took them like 30 full minutes at least to get him off the field. That had to be extremely traumatic for the players. And even if you don’t consider trauma (monsters), 30 minutes in cold just standing around, and then longer letting them calm themselves in the locker room and they’re not warmed up anymore. Sounds like a good way to get more injuries, not that that’s what mattered at the moment.