Military Plans to Fire Artillery Over California Freeway on Saturday NYT | Top Stories By: Laurel Rosenhall, John Ismay and Zolan Kanno-Youngs 18 October 2025 at 13:49 Rounds were fired on Friday across Interstate 5 as part of a test run for Saturday’s event at Camp Pendleton in Southern California. © Gregory Bull/Associated PressThe Marines plan to fire 155-millimeter artillery shells over a major freeway in Southern California on Saturday as part of a demonstration at Camp Pendleton.