The six airmen who died in a Sikorsky "Yasour" CH-53 helicopter crash over the Romanian Carpathian Mountains Monday, July 26, were flown home Friday, July 30, for burial with full military honors. DEBKAfile reports: The Israeli Air Force had been drilling high-risk attacks on precipitous cliff caves similar to the mountain tunnels in which Iran has hidden nuclear facilities.This maneuver requires exceptionally skilled pilots.