Bin Laden Helicopter?

Well not much info about the chopper crash. Here is a theory; A modified chopper, few in service and possibly not too completely engineered. Has extra rotor blades to reduce noise (stealth feature). Most likely very heavily loaded with armed troops. Dropped down low over the fenced compound to lower the seals. The tall and solid walls of the compound restricted the airflow over the walls. The air can not recirculate and get back over the rotor blades. The blades stall, lose lift and the bird plops onto the ground. Also possible F.O.D interference from extra dirt, flying trash. Just a thought. J, near Sacramento (F.O.D; foreign object damage to turbine)