UPDATE: An artillery shell detonated over California’s Interstate 5 during a Marine Corps demonstration on October 20, 2025, striking a California Highway Patrol (CHP) vehicle with debris. Fortunately, no injuries were reported, but the vehicle sustained significant damage, authorities confirmed.
The incident occurred during a live-fire event at Camp Pendleton, part of the U.S. Marine Corps’ 250th Amphibious Capabilities Demonstration at Red Beach. At the time, CHP officers were conducting a traffic break on I-5 to ensure safety during the training exercise. The shell reportedly detonated prematurely mid-air, leading to immediate concerns about public safety.
“This was an unusual and concerning situation,” stated CHP Border Division Chief Tony Coronado, who identified himself as an active Marine. He emphasized that it is highly uncommon for any live-fire training to take place over an active freeway.
In response to the incident, the Marine Corps has initiated an investigation. Spokesperson Capt. Gregory Dreibelbis confirmed, “We are aware of the report of a possible airborne detonation of a 155mm artillery round outside the designated impact area.” He assured that the demonstration underwent a rigorous safety evaluation, with multiple layers of redundancy to protect citizens. Following this incident, all live-fire demonstrations were canceled.
California Governor Gavin Newsom had previously closed the section of I-5 as a precautionary measure. He criticized the decision to conduct the demonstration over a major traffic route, stating, “This president is putting his ego over responsibility with this disregard for public safety.” Newsom further commented that the situation “could have killed someone,” highlighting the recklessness of using military demonstrations in civilian areas.
The CHP has filed an internal report regarding the incident and is recommending an after-action review to enhance future coordination between federal, state, and local agencies during similar events. This review aims to strengthen protocols for public safety near active roadways during military training exercises.
As the investigation continues, all eyes will be on how the Marine Corps addresses safety protocols moving forward. This alarming event raises significant questions about military training practices in proximity to civilian populations and the associated risks involved.
Stay tuned for further updates on this developing story as authorities continue their inquiries and assess the implications of this incident on future military demonstrations.
