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2h ago

Marine Artillery Round Detonates Over I-5, Damages CHP Car During Camp Pendleton Demo

An investigation now focuses on how the event was planned after the round exploded over a closed stretch of I-5.

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California Governor Gavin Newsom listens before speaking during a press conference announcing $11 insulin and prescription drugs with the CalRX program inside a Cedars-Sinai pharmacy in Los Angeles, California on October 16, 2025.

Overview

  • A CHP report says a 155 mm round fired from White's Beach at 1:46 p.m. detonated midair over Interstate 5 about three-quarters of a mile south of Las Pulgas Road during a Marine Corps 250th-anniversary event.
  • Small shrapnel pieces fell onto the closed freeway, denting a patrol car's hood as officers reported pebble-like impacts; no injuries were reported.
  • Investigators recovered fragments roughly one to two inches long, conducted safety sweeps of both directions, and later reopened the freeway.
  • Marines suspended further live fire and opened a probe, while CHP urged a formal after-action review to strengthen coordination for events near public roadways.
  • Gov. Gavin Newsom had ordered a 17-mile closure and later criticized the White House, which had said Marines reported no public-safety concerns; Vice President JD Vance and Defense Secretary Pete Hegseth attended.