Analysis - White house down! (trailer)

The trailer for "White house down" begins with a shaky image of Columbia films. We poor quality film of people screaming and the white house being blown up, this low quality footage suggest it is civilian footage and a POV shot from the eyes of a normal tourist. We  hear it is "breaking news from Washington, explosion, and shocking" these words con-notate an attack and as it is in America this suggest it is probably some kind of terrorist instead of an governments army. We then see the classically American style patriotic line "America will never be destroyed" and then we see one man walking against the crowd and in a black suit, this man in black is a  -------