At the end of the movie, the predator jumps down between Busey and his team and begins killing all of them. But then, the predator jumped back down between two members of Busey's team, the predator then viciously jabbed his staff into one of them while the other tried to freeze the predator. Then the predator threw the chap he stabbed over a railing... Now, just before that chap hits the ground, look at the bottom right hand corner and you will see the safety mat pop up! It's only for a split second though, so you have to be quick!