Cole Tomas Allen, 31, from California, ran through a metal detector at the Washington Hilton — the venue of the White House Correspondents’ Dinner — and fired one or two rounds before being shot and taken down. The Secret Service extracted the Vice President in seconds. Trump was flanked and removed in twenty. By any operational measure, the protection apparatus worked. By any other measure, someone with a gun got into the same building as the president at a nationally televised event.