Memo to gamers everywhere: don't mess with Megan Fox! The Transformers vixen makes a brief appearance in the live-action trailer for the highly anticipated video game, Call of Duty: Ghosts and we'd say she's definitely not gun shy. The teaser dubbed "Epic Night Out" is set to Frank Sinatra's classic "I'm Gonna Live Till I Die," and directed by James Mangold (The Wolverine, Walk the Line). It follows four buddies who embark on an action-packed adventure through a decimated Las Vegas of the future. Armed to the teeth with all kinds of heavy weaponry, the quartet evade a helicopter gunship, then race their way through a casino while being chased by a hit...