Maybe he means male bees?
If so i think there would be very few changes. Just a bit more buzzing aboard ship.
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Modern, camera-carrying drones improve the crew's situational awareness. For example, what is behind that super-tanker off our port bow?
Circa WW2, drones would not discourage U-boats because they are too small to be seen by the naked eye. U-boat captains would be forced to guess if a drone was hovering over a convoy.
Technology-wise, drone airframes and engines were readily available by WW2. Electronic cameras (e.g. television cameras) were still in their infancy. The biggest hassle would be flight controls.
When were radio-controlled model airplanes introduced?
What year did Marilyn Monroe start working for Radio-Plane? .... late 1940s, or early 1950s?