“London Has Fallen” is the follow up to the 2013 action thriller “Olympus Has Fallen.” In that movie terrorists take over The White House and attempt to kill the U.S. President. A security officer played by Gerard Butler is able help the president survive the elaborate attack. In the sequel terrorists are once again after the president but this time on foreign ground. Things are taken to another level as a whole city is besieged. Can the U.S. president with the help of his top security agent be able to survive? Find out in theaters starting March 4th.