Editor's note: This is a developing story. We will update as more information becomes available.
One Marine was killed when an Amphibious Combat Vehicle (ACV) rolled over Tuesday at Marine Corps Base Camp Pendleton, the Marines said in a statement.
The rollover occurred around 6 p.m. as the ACV was making a "ground movement" during training, according to Wednesday's statement from I Marine Expeditionary Force.
Fourteen other Marines were inside the vehicle when it crashed, the Marines said. They were taken to local hospitals, including Naval Hospital Camp Pendleton, for "evaluation and treatment."
The name of the Marine killed is being held until their next of kin are notified. The Marine was attached to the 15th Marine Expeditionary Unit, the Marines said.
The accident is under investigation.
Marine ACVs are new to the Corps and are set to replace the Vietnam War-era Assault Amphibian Vehicles. The new vehicles have had issues, including a 2022 incident in the Camp Pendleton surf in which two ACVs floundered just off a beach. One of which rolled over.
Tactical vehicle rollovers outside of combat have killed more than 125 troops across the military since 2010, according to numbers cited in a 2021 Government Accountability Office report on the issue.
In May 2019, Marine 1st Lt. Conor McDowell was killed in a light armored vehicle rollover on Camp Pendleton when it came upon an unknown washout not visible in the high grass surrounding it.
From 2010 to 2019, the Marine Corps experienced five serious accident per year on average, the GAO found. Sixty-five percent of its fatal tactical vehicle accidents involved rollovers.
