Confrontation between authorities and alleged correspondents' dinner shooter lasted 7 seconds

Shortly after 8:30 p.m. on Saturday, an alleged assassin burst through a set of double doors one floor above a ballroom where President Trump and roughly 2,600 other White House Correspondents' Dinner guests were eating a salad course. Seven seconds later, he was apprehended by federal law enforcement, multiple sources familiar with the matter told CBS News. …