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Marine Commander Relieved Of Duty Because Of Deadly Ocean Training Accident

Lt. Col. Michael J. Regner, who was relieved of command of Battalion Landing ...

Credit: Department of Defense

Above: Lt. Col. Michael J. Regner, who was relieved of command of Battalion Landing Team, 1st Battalion, 4th Marine Regiment, 15th Marine Expeditionary Unit, speaks at a memorial ceremony August 21, 2020, for the nine who died in July.

The commander of I Marine Expeditionary Force Tuesday relieved from duty the commander of a landing team involved in a training accident that killed nine young servicemen in the ocean near San Clemente Island, the Marine Corps announced.

USMC Lt. Gen. Karsten Heckl removed Lt. Col. Michael Regner from his post as commanding officer of Battalion Landing Team, 1st Battalion, 4th Marine Regiment, 15th Marine Expeditionary Unit "due to a loss in trust and confidence in his ability to command" following the sinking of an assault amphibious vehicle about 80 miles west of Encinitas.

"Although the command investigation (into the accident) has compiled a substantial amount of information and data which formed the basis for Heckl's decision, it is still ongoing as the Marine Corps continues to investigate, assess all relevant information and take appropriate actions," I MEF public affairs advised in a prepared statement.

The amphibious troop-transport vehicle carrying the Camp Pendleton- based personnel — eight Marine riflemen and a Navy hospital corpsman, ranging in age from 18 to 22 — foundered for unknown reasons about 5:45 p.m. July 30 during a maritime training mission and went down in water nearly 400 feet deep.

One Marine was pronounced dead at the scene of the accident. The naval Undersea Rescue Command recovered the other victims' remains from the sea floor eight days later.

Seven members of the crew aboard the AAV were able to escape the sinking craft and survived.

The Marine Corps has not released an official determination of the cause of the accident.

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