How did Trump dinner gunman spark chaos? The Big Question explores

How did a star-studded night with Donald Trump descend into chaos as a gunman stormed the Correspondents' Dinner? 'Get down!' echoed across the ballroom. One of Washington's most exclusive events was thrown into turmoil. A night of glamour.. collapsed in seconds. Inside the Hilton, guests were joking about Trump's upcoming speech, guessing which news outlet he would roast the most. Then.. 'It sounded like muffled champagne corks… pop, pop, pop.'