One of the notes of news from the killing of Osama Bin Laden was the helicopter that Seal Team 6 crashed that night. Photos of the tale of the craft have circulated the internet. The radar-evading silent helicopter is not new. The technology was supposedly developed in the early 1990's in the infamous Area 51 installation. Welook at the sort of technology that's coming out of the classified installation that has been at the center of people's imagination for decades.