L 'E3 2011 starts at large: a demo of Call of Duty: Modern Warfare 3 is presented on stage. The video begins by showing a long sequence of underwater gameplay that shows the collision of a submarine after you blew up the rudder and then going in and coming out the enemies. In the demo we can see a sequence slow-time, classic series, and then escape on a boat in which the player must get rid of enemy ships trying to stop him: the sequence ends epically with the entry of the raft in a helicopter leads him to safety.

Here's the video showing the entire demonstration.

Call of Duty: Modern Warfare 3 - E3 Gameplay | HD version