Navy Probes Deaths of 2 Divers at Md. Army Site 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. While one diver was pronounced dead at the scene, the other was transported to a local medical facility, where he was pronounced dead. The divers' names weren't immediately released. The Navy says its Explosive Ordnance Disposal Group Two is conducting an investigation into the deaths.