A section of Interstate 5 near Camp Pendleton was closed for a few hours Saturday while the U.S. military conducts a demonstration involving live ammunition discharged over the freeway — with the exercise and the closure being blasted by politicians on both sides of the aisle.

Vice President JD Vance and Defense Secretary Pete Hegseth were set to attend Saturday’s 250th anniversaries of the U.S. Navy and the Marine Corps, which was dubbed “From Sea to Shore: A Review of Amphibious Strength.”

The Navy turned 250 on Monday, and the Marines will do the same on Nov. 10. Navy Secretary John Phelan and Marine Commandant Gen. Eric Smith were also scheduled to attend.

The freeway will be closed from Harbor Drive to Basilone Road from approximately 11 a.m. until 3 p.m., potentially causing a maj

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