A buddy of mine uses a drone to tape his football team practices to better see the plays and I have a few friends in the real estate market that use drones for beautiful property photos. The drones were grounded during football games because of the risk to the crowd during the game? What? Worried about a light weight drone bumping into a crowd but not about a drone crashing into a plane. "Threat" is a scary word... minimal is nice but when I am in a plane flying across the country i would prefer zero threat to minimal.