Yep, a friend had a flyaway on 2nd flight. Tracked it over 2 miles before losing line of sight and the rest is a mystery. It climbed as high as 600 feet according to the data before dropping signal...could have easily hit a VFR airplane at 500' or landed in a schoolyard during P.E. Battery life suggest another possible 2 miles before crashing or landing. Never found it. Drones are cool but I am now a believer in how dangerous they are to the public.