Creamy, I'm 25 years ATC, about 28 years pilot, ME-CIR, Turbine, Instructor etc. I've been about the traps a bit. I fly a turbine as a drop pilot on some days off. I've had a fair bit of experience from BOTH SIDES OF THE FENCE. I can see most points of view. I'm one of the few people who doesn't 'not like a person because they have a contrary point of view'
I don't know whether one of the aircraft concerned were required to have a radio or not, one was required to, he was un contactable.
My point stands though, if you're not required to have a radio wouldn't you think this aircraft would have the brains to remain clear of a drop zone by a few miles? Dumb as dogsh!t (not at work, personal opinion only)