Digital Advances Produce Improved Unmanned Aerial Vehicles

One day on a gray-painted aircraft carrier tossed by turbulent seas, a grizzled Navy commander awaits the arrival of a new pilot. A teeny knock pings from the outside of the officer's watertight steel door.
"Come in," the commander growls. The door swings open and a squat, cylindrical object negotiates itself over the threshold and then trundles into the officer's quarters.
In a metallic voice the robot cheerfully announces: "'R2-D2' reporting for duty, sir!" Already nauseated by the shifting ocean, the commander loses his lunch.