A man was just detained outside the White House for trying to fly a drone over the fence. It is too soon to know the intentions of the flyer but this is something I have warned about for some time. I first sounded the alarm over a year ago in a piece titled the Coming Urban Drone War. the challenge is as time goes on, the flying range of drones will increase meaning the ability to stop people from flying them by visually seeing them and taking action, will cease.
There may be technological solutions to the problem such as SmartSenseCom but it it unclear if it was used or would have been able to detect this threat soon enough.
In the end, the only solution to incoming drones being flown at targets from three-dimensions is to have security drones as a barrier which take out the bad drones. This isn’t unlike the Iron Dome in Israel used to save the lives of civilians targeted by rockets launched by neighboring Iranian-backed terrorist groups.