Multiple U.S. military and law enforcement agencies have launched a coordinated search for a Marine Corps service member who went missing during a training exercise off the San Diego coast, according to a statement from the 3rd Marine Division. The individual, identified by the department as a lance corporal, was last seen during a shore-based tactical exercise on Wednesday afternoon, with search efforts ongoing under the command of the Coast Guard’s 11th District. A Marine Corps spokesperson confirmed the operation is “in full coordination with local and federal partners,” though no additional details about the service member’s unit or the specific nature of the training have been released.
The search involves helicopters from the 3rd Marine Aircraft Wing, patrol boats from the San Diego County Sheriff’s Department, and underwater drones deployed by the Naval Surface Warfare Center. Officials described the effort as “complex” due to the exercise’s remote location, approximately 12 miles offshore, and challenging weather conditions, including gusts exceeding 20 knots. A Coast Guard representative stated that “all available resources are being utilized to locate the individual as swiftly as possible.”
The Marine Corps has not disclosed the service member’s name, citing privacy protocols, but confirmed the individual is part of the 1st Battalion, 4th Marines, based at Camp Pendleton. A unit commander, Lt. Col. Marcus R. Hayes, issued a statement expressing concern but declined to comment on the circumstances of the disappearance. “We are focused entirely on the safe return of our fellow Marine,” Hayes said. “Our thoughts are with their family during this time.”
The training exercise, designated as “Iron Clad 2024,” is part of a biannual readiness program designed to simulate amphibious operations under realistic combat conditions. While the Marine Corps has not linked the incident to the exercise’s objectives, a defense official familiar with the event noted that “the nature of these exercises often involves high-risk scenarios that require strict operational discipline.” No other personnel have been reported missing during the drill, according to a joint statement from the 3rd Marine Division and the Naval Surface Forces Pacific.
Local authorities have urged the public to avoid the search area, which remains under a temporary maritime exclusion zone. The Coast Guard is also coordinating with the San Diego Fire-Rescue Department’s dive team, which has deployed to assist in underwater searches. A spokesperson for the department said, “Our priority is the safety of all individuals involved, and we are working closely with military partners to ensure a thorough and efficient operation.”
The Marine Corps has not yet provided a timeline for when the search might conclude, but officials emphasized that “the operation will continue until the service member is located.” Families of the missing Marine have not been publicly identified, and no further details about the individual’s background or service history have been released. A separate investigation into the circumstances of the disappearance is reportedly underway, though no allegations of misconduct or negligence have been made at this stage.
