The new Battlefield 3 trailer has arrived, providing more stupidly pretty in-game footage. It's part two of the Fault Line series, which follows a team through one of Battlefield 3's single player missions. In this video the squad is pinned by sniper fire on a rooftop. There's only one way to deal with snipers, a shoulder mounted rocket launcher, the perfect weapon to show off the full battlefield destructibility of the Frostbite 2 engine. BOOM. Here's part one .