It all starts with the small rockets... the first one is free so to speak. An Estes D engine has about 20 ns (Newton Seconds) of total impulse. This motor has 35,000ns of total impulse. Yes the launch area is free of airplanes and no where near commercial routes. We work closely with the FAA to get permission to fly. Smaller rocket launches will get a Waiver from the FAA and a NOTAM is posted inform pilots in the area of the activity that is going on. This launch is able to get the airspace restricted and as such, air traffic will be diverted around the area if need be. But at the end of the day, if you can see a plane or there is cloud cover to prevent you from seeing planes, you simply do not fly.