Navy
The U.S. Naval Research Laboratory (NRL) with funding from SwampWorks at the Office of Naval Research (ONR) and the Department of Defense Rapid Reaction Technology Office (DoD/RRTO) demonstrated the launch of an all-electric, fuel cell-powered, unmanned aerial system (UAS) from a submerged submarine. From concept to fleet demonstration, this idea took less than six years to produce results at significant cost savings when compared to traditional programs often taking decades to produce results. - See more at:
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.
I can see this becoming a kill streak reward for next years Call of Duty