The incident at the White House Correspondents’ Association Dinner is prompting renewed questions about how the Secret Service allowed the man to get so close and whether the agency can adapt to an increasingly hostile threat environment.

Questions had lingered over whose weapon had struck the officer in his protective vest on the night of the April 25 gala, after at least one Secret Service agent also opened fire.

White House dinner shooting intensifies scrutiny of Secret Service leadership, staffing shortages and security failures.