Darilyn C. Duong, a 25-year-old Marine drill instructor assigned to Marine Corps Recruit Depot Parris Island, was found dead at a residence in Port Royal on Friday.
The Marine Corps identified Duong as a sergeant from Winnebago, Nebraska. Her awards included the National Defense Service Medal, the Sea Service Deployment Ribbon with two awards, the Navy Meritorious Unit Commendation, the Marine Corps Good Conduct Medal with two awards and the Global War on Terrorism Service Medal.
Marine Corps Recruit Depot Parris Island
The Marine Corps assigned Duong to the Recruit Training Regiment, 3rd Recruit Training Battalion. The death involved A Marine in a training role at Marine Corps Recruit Depot Parris Island, a detail that places the case inside the command responsible for preparing recruits at Parris Island.
The Marine Corps extended its deepest condolences to the family, friends and fellow Marines affected by the loss.
Port Royal Police Department
Officials said the cause of death was under investigation. A Port Royal Police Department incident report documented on July 20, 2026, said responding officers reported no foul play was believed to be involved in the death.
That leaves the case with two parallel points: the reported lack of foul play and the separate investigation into how Duong died. For anyone connected to her unit, the practical next step is to wait for the investigation to produce the answer it has not yet given: what caused Sgt. Darilyn C. Duong's death?
