Metal shrapnel from Marine Corps live-fire training struck a California Highway Patrol vehicle on the same day as Vice President JD Vance's visit to Camp Pendleton.

The New York Times reported that a 155-millimeter shell fired during a live demo at Camp Pendleton on Saturday for the Marine Corps’ 250th anniversary prematurely detonated, dropping fragments on a motorcycle part of Vance’s motorcade and a California Highway Patrol vehicle.

California Governor Gavin Newsom had warned against the live fire demonstration, which would shoot artillery over a freeway.

The mishap, during an anniversary celebration for the Marine Corps attended by the vice president and defense secretary, underscores safety concerns that Gov. Gavin Newsom voiced before Saturday’s event at Camp Pendleton.

A motorcycle that is part of Vice President JD Vance's security detail and a California Highway Patrol car were hit with shrapnel on Saturday after a 155-millimeter shell exploded over Interstate 5 during a live-fire demonstration for the Marines' 250th anniversary on Saturday,

Vice President JD Vance rang in the Marine Corps’ 250th at Camp Pendleton, praising fellow Marines after an assault demo and pledging they are ready to fight and win.

JD Vance joined his fellow Marines at Camp Pendleton in California Saturday to celebrate the U.S. Marine Corps’ 250th anniversary.

Both Vance, a former Marine who served as a public affairs officer in Iraq, and Secretary of Defense Pete Hegseth celebrated the show of force and praised the gathered troops for their service to the country and for adhering to standards they argue have eroded in the quest for diversity under previous administrations.