The latest Transformers: Age of Extinction TV trailers teach us that you should never question Mark Wahlberg's leadership skills. Stanley Tucci complains, and the next minute he's being handed a giant piece of alien weaponry as the Autobots and Decepticons engage in an epic brawl behind him. Who will lead the charge as humanity fights for survival against extinction in the fourth chapter of Michael Bay's sprawling Transformers saga? Prepare yourself for more new footage as the search for Optimus Prime begins in just a few short days...