The Navy is investigating the deaths of two sailors during a diving operation at Aberdeen Proving Ground in Maryland, the second deadly incident at a deep pond there in the past month.
Officials say the divers died Tuesday. One was pronounced dead at the scene. The other was transported to a local medical facility, where he was pronounced dead. The unit is based at Joint Expeditionary Base, Little Creek-Fort Story in Virginia Beach.
The divers' names weren't immediately released.
The Navy says its Explosive Ordnance Disposal Group Two is conducting an investigation into the deaths.
Late last month, an engineering technician died while performing maintenance at an underwater test facility at the Army site.