Can't resist, The people worried about the safety of this maneuver can not hover. They think the plane is going to leap in any direction at any moment if a component fails. This is not so. It will hit the ground immediately following component failure. Full 3D deflections are required at times to maintain the hover. The plane is using prop blast for control and has NO forward airspeed. I think we will see a disaster because of a helicopter or jet before one from a hovering model. Any pilot knows when a problem occurs and can move out of the way avoiding any danger. In AZ its tough to get that close because of all the dirt blowing. I don't know how chip maintained control during his walk around in the cloud of dust. It sure was great.