Trump Evacuated After Gunshots at Dinner
Shooter in custody after firing at Secret Service agent near White House.
Trump previously boycotted annual dinner since taking office.
Attendees ducked under tables as Secret Service surrounded couple.
Suspect armed with shotgun and multiple weapons.
Secret Service agent unharmed due to protective gear.
Dinner rescheduled within 30 days after incident.
Trump criticized Washington Hilton's security and proposed White House events.
10 hours ago