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Gov. Gavin Newsom's office is weighing partial closures of Interstate 5 starting Friday, citing unconfirmed reports of a White House-directed plan to use live ordnance during a Marine Corps 250th anniversary event off Camp Pendleton. Officials say they’ve received little safety detail, while a military advisory said the celebration will include a live amphibious assault demonstration. Caltrans is preparing for a possible federally requested shutdown that could gridlock traffic from Dana Point past Del Mar. Vice President JD Vance and Defense Secretary Pete Hegseth are expected Saturday, as Camp Pendleton conducts live-fire training and statewide No Kings rallies coincide.

Prepared by Lauren Mitchell and reviewed by editorial team.