Ordnance fired over Interstate 5 at yesterday's 250th anniversary of the Marine Corps at Camp Pendleton prematurely detonated.

The U.S. military demonstration that shot live-fire artillery rounds over Interstate 5 on Saturday dropped metal shrapnel on a California Highway Patrol vehicle, resulting in damage, agency officials said Sunday.

I-5 closes 11 a.m.–3 p.m. for Marine Corps 250th anniversary live-fire demo at Camp Pendleton; expect major SoCal traffic delays.

A celebration scheduled for this weekend at Camp Pendleton has turned into a national debate between California Governor Gavin Newsom and the Trump administration over potential closures of I-5.

San Clemente became ground zero in the battle between California and the Trump administration over a pre-planned live-fire artillery round shot over the freeway during a military event at Marine Corps Base Camp Pendleton.

The California Highway Patrol reopened a large swath of Interstate 5 Saturday after it was closed for a few hours during a live-fire demonstration at Camp Pendleton witnessed by Vice President JD Vance and Defense Secretary Pete Hegseth,

The decision to close Interstate 5 due to live-fire at Camp Pendleton was made early Saturday, a California Highway Patrol official told KPBS.

The artillery rounds were fired over Interstate 5 near Camp Pendleton in San Diego as part of a military demonstration for the Marine Corps' 250th anniversary.

"Because of the event and closure, drivers should expect delays on Interstate 5 and other state routes throughout Southern California before, during, and after the event," the press release says.