In respect to the perceived risk to bystanders of aerial filming....
During the period from 2000 to 2013, excluding war zones, aerial filming was the most dangerous activity for media workers, more died or were seriously injured worldwide in helicopters than by all other filming endeavours and assignments, combined.
However, during this 14 year period only one innocent bystander was reported injured in a aerial filming or photography crash.
So whilst a terrible toll was endured by pilots and media workers, the public were unscathed.
This record was sadly broken when a news helicopter crashed on takeoff from the roof of building in Seattle in 2014 and seriously injured two members of the public.
Stabilised cameras, use of higher speed frame rates and of course drones, have bought about a significant reduction in aerial filming accidents.
Mjb