CAMP PENDLETON, Calif. (KABC) -- Metal shrapnel from an explosive ordnance fired during the U.S. Marine Corps' 250th anniversary celebration at Camp Pendleton on Saturday hit two California Highway Patrol vehicles, the agency published in an internal report.

The celebration, which included a military exercise using live artillery fire, shut down a 17-mile stretch of the 5 Freeway in both directions off and on for about four hours, stranding drivers for hours.

After escorting Vice President JD Vance to the event around 12:51 p.m., the report says CHP secured the area and created a traffic break at 1:15 p.m., preventing the public from driving on a portion of the freeway that could have been in the path of live-fire ammunition.

At 1:46 p.m., artillery was scheduled to be fired from Whit

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