Here is the 2nd episode of Battlefield 3 Fault Line series Gameplay Trailer. As DICE demonstrates the destructive power of the new Frostbite 2 engine, the clip shows the squad moves to the rooftop to take out a sniper armed with a .50 caliber.
Battlefield 3 Fault Line Episode II: "Good Effect On Target"
"Dude, that's a fuckin' fifty. Stay low."
Here is a link in case you missed the first episode of Battlefield 3 Fault Line.