My guess however, is that they did their attempt appropriately, with NOTAMs to pilots thru the FAA and other government entities, and stringent attention to details such as altitude enforcement. You are comparing apples to oranges here. you can bet if there had been an incident it would have been publicized, but at LEAST they probably were obeying all the rules and safety codes which are currently in place. That is the difference in these two events. there was no adherence to safety protocols, nor common sense, and it almost ended in a catastrophe.