What amazes me about drone footage like this is the control from, to me, an insane distance for unlicensed, low-power transmitters (known in the trade as "FCC Part 15"). I was a ham radio nerd (and 2-way radio repair tech) in a previous life, and know well the limitations. A big challenge is on the drone end, since you're using lots of battery to keep it up, power the camera and GPS,
and power the radio link back to the controller. I guess the GPS homing sort of keeps you out of trouble if comm is crippled, but... still.
Another issue is the relative insecurity of radio comm. It takes just one transmitter with professional-level power on the "wrong" frequency too close to where you're operating to turn your signal to mush.
When it took off and I saw the objective over a mile away my first thought was overconfidence in the equipment. It does make me wonder how many of these guys lose big bucks' worth of drones while they're developing skills or doing "go for it!" operations like this. That guy with the acrobatic fly-through of a moving train evoked, for me, the question of how many drones he lost in the practice.
