Comment: I have most certainly read the statements by law enforcement on this.   Some of the statements are stupid beyond belief.  Others political in nature.   Few are more than speculation.   It doesn't take a lot of brains to modify the guns clearly less than would be needed to work as an accountant.   It similarly doesn't take a lot of brains to get stuff from the car to the room.  You ask for or get a freaking baggage cart.   Then you load it up and get on the elevator roll it to your room and unload.   If it takes two trips who is going to notice?   Especially if you do it on different days.   Again not rocket science and no training needed.   

You clearly have a problem comprehending what you are reading and matching it to reality.