Regarding #6, the weapons that I saw pictured on MSM were fairly user friendly types (trust MSM or not is up to you). The thing that I find hard to get is the second point you raise there. How did an untrained man keep up a sustained fire with a rifle and not get all sorts of stoppages if not a critical failure. Also the shot from a height is both difficult and an ineffective use of an automatic weapon, the fall of shot being gathered by the geometry of the drop. This man seems to be experienced enough to keep an overheating rifle firing and yet stupid or inexperienced to the point that he created a far from optimal situation for himself. Then again this could have been a lure to get law enforcement away from the real shooter on a lower floor. Then again we could all be barking up the wrong tree and have absolutely no idea what the hell is really going on, but the scenario playing on the MSM stinks to high heaven.