|Rendering of Unknown Helicopter Used to Kill Bin Laden|
There is speculation that the United States may have used a new type of helicopter in the raid to kill Osama bin Laden. From the photographs taken of one of the helicopters that crashed during the night time raid, aviation specialists have been unable to determine the exact model.
Some experts claim that this new design is the first radar-evading quiet helicopter. This might explain why the Pakistani military was unaware of the assault on bin Laden's compound. What this means to extremists is that an attack can be carried out without much fuss.