A drone is an unmanned propeller-driven reconnaissance vehicle used by the military. In Reality, it is a Dornier 350, the Fastest propellered aircraft to Date. It was use as a Spy Plane in WWII. The propeller pushes the vehicle along.
In game, Maxwell is able to ride it.
The plane closely resembles an MQ-9 Reaper, however it's actually an UAV (Unmanned Aerial Vehicle), instead of a standard plane.