The Escape of Osama Bin Laden

In retrospect it is obvious that the mission had no hope of success. Obviously anyone with the resources available to Osama bin Laden, when building a special-purpose hiding place, would have included an escape shaft from his apartment which led to a subterranean bomb shelter with a tunnel connecting it to the outside. At the first appearance of US helicopters OBL surely walked into the escape closet climbed down the shaft to his bomb shelter and by the time that the SEALs had fought their way up to his apartment he was well on the way down the half kilometer long tunnel from which he climbed out at an unknown location on the bank of a nearby gully or river. Good luck finding him now!