What happens to the swarm afterwards? Do they stay in the air forever? Self-land in a neat, organized fashion? Or do people have to go track them down?<p>Also, what is the purpose of this class of drone?<p>EDIT:<p>Searching "perdix drone" surfaced more information.<p><pre><code> Perdix drones are the
main subject of an
experimental project
conducted by the Strategic
Capabilities Office of the
United States Department of
Defense which aims to
develop autonomous
micro-drones to be used for
unmanned aerial surveillance.</code></pre>