First 'Captain America: Brave New World' Teaser Sees Anthony Mackie Take the Shield

Marvel Studios has dropped off the first official teaser for Captain America: Brave New World, the fourth installment in the series starring Anthony Mackie as Sam Wilson -- the film's protagonist who finds himself at the epicenter of an "international incident" and must uncover the reason behind a "nefarious global plot."Harrison Ford makes his Marvel Cinematic Universe (MCU) debut as the newly elected U.S. President Thaddeus Ross, who makes Wilson privy to the plot's central scheme and looks to...