clever idea , in the future I think it will be interesting to see all the different devices that will be attached to drones for different applications especially law enforcement and search and rescue , it is surprising to me that police forces in most parts of the world have been relatively slow to seize the opportunity of obtaining relatively cheap air support
I thought of this a few weeks back with two torch's as I live in a industrial estate which is very dark at night and in the past there has been a load of diesel getting stolen from the trucks in our yard. Here is what it looks like during the day time.
Lume Cube do a kit with 2 lights & brackets to fit onto a Phantom 4
the company i work for have a security division, who experimented with drones to fly around so the site could be guarded by 1 guard who would be safely tucked up in the gatehouse. But someone pointed out they will need to be CAA licenced as they are actually flying for reward