sea drone, US officials have told CBS News, the BBC's media partner. It was the first such operation carried out by US forces, the officials added. US Central Command (Centcom) earlier said the two "soldiers were safely rescued within approximately two hours and are in stable condition" after their AH-64 Apache helicopter went down "near the coast of Oman while patrolling regional waters". It was not immediately clear whether the aircraft had developed a mechanical or any other technical problem, or had been downed by Iranian fire. The incident is being investigated. "Rescue efforts were led by US Naval Forces Central Command and the 82nd Airborne Division, with support from US Air Force and Navy units including US 5th Fleet's Task Force 59," the statement added. The military officials who spoke to CBS News said the pair had been rescued by an uncrewed surface drone that was operated by Task Force 59. (BBC)