Metal shrapnel from an explosive artillery shell damaged a California Highway Patrol (CHP) vehicle during a Marine Corps live-fire training demonstration Saturday near a major highway, the patrol said.

California Gov. Gavin Newsom lashed out at the Trump administration before the event, saying it was dangerous to fire live rounds over a highway.

A patrol vehicle was struck by shrapnel from an artillery round that was fired during Saturday's event at Camp Pendleton, officials said.

An artillery shell detonated prematurely midflight Saturday during a Marines anniversary event attended by Vice President JD Vance, sending shrapnel flying toward California Highway Patrol vehicles, according to a report from the CHP.

Vice President JD Vance and Secretary of War Pete Hegseth attended an event at Camp Pendleton, commemorating the Marines' 250th anniversary.