The US military would like to use small drones a lot more, especially to gather intelligence inside buildings and other structures. The problem? Most drones aren't fast or maneuverable in tight places, to the point that even a kangaroo can take one out. Enter DARPA: the gadget arm of the military has just created the Fast Lightweight Autonomy (FLA) program to build fully autonomous UAVs that can get through "a labyrinth of rooms, stairs and... other obstacle filled environments." The drones would also have to move at 45 miles per hour in complex spaces without relying on GPS waypoints -- which is where the birds of prey come in.