A shooting at the White House Correspondents’ Association dinner at the Washington Hilton sent President Donald Trump and top officials into evacuation mode Saturday, according to U.S. officials and law enforcement. Investigators said the suspect, later identified as Cole Tomas Allen, 31, entered the hotel and moved through multiple security layers before attacking the event’s ballroom. Acting Attorney General Todd Blanche said Sunday that authorities believe Allen traveled cross-country by train and appeared to be targeting Trump and administration personnel. Investigators said Allen was armed with a shotgun, a handgun, and knives, and that a Secret Service officer was shot while wearing a bullet-resistant vest. The incident has already triggered scrutiny of venue security design and how guests enter large, high-profile events. Officials also signaled the security review will extend beyond what happens on air travel, since passengers on Amtrak are generally not required to declare firearms. Allen’s next court steps are expected to come quickly. He faces federal charges including using a firearm during a crime of violence and assault on a federal officer with a dangerous weapon, with additional charges anticipated as the investigation continues.