I saw the coverage of this story elsewhere and it really must be acknowledged as a remarkable feat of engineering. Just amazing work. Good and bad will come of it of course, depending on who is using it and to what end. I imagine all sorts of interesting applications: Military, rescue, mapping of inaccessible locations, photography, surveillance, microclimate weather and wind data recording. No doubt troublemakers will also use these things to eavesdrop, administer toxins, release as attack swarms, etc. Once the genie is out if the bottle it cannot be put back in, so it will continue to be refined and improved and people will adjust.