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California lawmakers are demanding answers after a live fire demonstration over Camp Pendleton Saturday led to a misfire that rained shrapnel on Interstate 5, striking two California Highway Patrol vehicles.

Deborah Brennan

CalMatters

An artillery shell exploded over the freeway during a celebration of the 250th anniversary of the Marine Corps, attended by Vice President JD Vance and Secretary of Defense Pete Hegseth. Pieces of shrapnel scattered on the closed roadway and struck a patrol vehicle and motorcycle.

“I was very disappointed, because I hoped we could celebrate the Marine Corps without undue risk,” Rep. Mike Levin, a Democrat from San Clemente and Carlsbad who represents the district including

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