Footage has been released of unmanned 'swarming' drones being launched.
The video, released by US Navy Research, shows the latest demonstration of the Low-Cost UAV Swarming Technology (LOCUST), with the launch of nine drones in a few seconds.
The US and British military have been using large, single drones for years but swarms of small, inexpensive and expandable drones could be used for surveillance or as a way of confusing enemy forces.
In March footage was released of a 'Swarm Drone' being launched from a fighter jet.
It's been claimed the drones could change the face of modern warfare but there are no details about what equipment they could carry or if they would be armed.