A shooting at a security checkpoint for the White House Correspondents' Dinner has raised concerns about security at future events. The gunman, Cole Allen, charged the checkpoint with a shotgun, a handgun, and knives and was quickly subdued by Secret Service agents. Allen now faces multiple federal charges, including assault on a federal officer and use of a firearm during a violent crime. The incident has raised questions about security protocols during events. One Secret Service agent was shot in his bulletproof vest, but has already been released from the hospital. The shooting occurred near the assassination attempt of President Ronald Reagan 45 years ago.