I know that some have worked on this... but have given thought to how one could use lower power hives/swarms in order to do surveillance. Not so much for spyin

I know that some have worked on this... but have given thought to how one could use lower power hives/swarms in order to do surveillance. Not so much for spying on neighbors but virtual tours of national parks and monuments, stitching many photos together to form 3D tour space. High end capacitors over batteries, and a swarm where individual drones come home to charge, keeping roughly 1/3-1/2 in reserve and accounting for flight times to/from target area... For less coverage, of course, less drones would be needed. Getting down closer to the size between a large bug and small bird's body for total size would probably be needed as well for a bit of stealth... noise is another concern. Interesting work/ideas.