Who do you think will get sued?

Last week, a man jumped from a monorail and into the tiger cage at the Bronx zoo. See Reuters News report . He was injured by the fall as well as the tiger.
Since this is America, where anyone can sue anyone else for any reason – and find a lawyer willing to take the case on contingency, who do you will be the first person or agency to be sued?
We know it certainly wasn’t the nutjob’s fault. He just wanted to be “One with the Tiger.” So, whose fault was it, and how much will they have to pay?
This is in Social. (He says in a whisper voice.)