As a parent of a special needs child, I say thank you for being on the lookout like that and preventing injury or death. The college-age "adults" are not really doing their jobs in this case. They may not have the experience or otherwise be aware of how quickly things can go wrong. Hopefully they will learn from this. I believe that, yes, it would be appropriate to inform Parks & Rec about the episode. Not so much to get somebody in trouble or fired, but to help insure that better care is taken in the future.