From The New York Times:
The Marines fired 155-millimeter artillery shells over a major freeway in Southern California on Saturday as part of a demonstration at Camp Pendleton to celebrate the Marine Corps’ 250th anniversary.
The plans to fire over the freeway triggered outrage by Gov. Gavin Newsom late Friday night after his office had been informed days earlier that the celebration would not involve firing munitions across Interstate 5, a heavily traveled corridor between Los Angeles and San Diego. Early Saturday, Mr. Newsom said the state would shut a 17-mile section of the freeway from noon to 3 p.m. Pacific time because of potential hazards posed by the military’s plans.