Use a submarine, and go to the ocean floor at the following location at the far northern edge of the map to see a crashed UFO. Note: Bigfoot only appears for a short amount of time. Switch off the scope to get a good look at Bigfoot. Use the rifle's thermal scope, and aim down and right to see a slightly fatter thermal signature in the forest. Eventually, you will reach a yellow ring, and it will switch to Michael in the helicopter with a sniper rifle. During the 'Predator' mission, you will chase two enemies through the forest.
