"Early this year, the US Patent and Trademark Office approved a patent application from Boeing's Nathan Hiller for a "rapid deployment air and water vehicle." In other words, Boeing's has patented a remotely operated flying drone that can transform into a submarine."
A $230 pocket-sized drone that can only fly for three minutes.
In the span of 13 months, eight drones have crashed.
Attacks like this one are likely to become more of a problem in the future.