Drones can help or harm. Figuring out how to respond to them isn't going to be easy.
1 of 11
The Boston Athletic Association declared that the entire route of the 2015 Boston Marathon would be a "No Drone Zone."
It advised the public not to operate "any type of drone (unmanned aerial vehicle), including remotely controlled model aircraft, over or near the course, or anywhere within sight of runners or spectators."
Given the terror attack on the race two years earlier, the group's prohibition on drone usage is understandable. But it also offers a reminder that cargo and driver intent determines whether something is a "vehicle" or a "threat," and to the extent that we cannot make that distinction, we can expect problems formulating rules flexible enough to cover either definition.