Not so much a conspiracy, rather a tangible development. But I thought I'd chuck a bit of red meat into the Conspiracy forum. They can be made operational within two minutes, but the report doesn't mention the device's operational ceiling. It does, however, allude to the drone's non-military potential.
See for yourselves: Farnborough Airshow: 'Foldable Drone' Unveiled - BBC
See for yourselves: Farnborough Airshow: 'Foldable Drone' Unveiled - BBC