I would be surprised if every player wasn't fielding unmanned submarines, themselves fitted with drone tech, powered by a plutonium battery that can loiter for

I would be surprised if every player wasn't fielding unmanned submarines, themselves fitted with drone tech, powered by a plutonium battery that can loiter for months, surface, release the drones, and phone home with via satellite. Doing recon with them against an enemy is the surprising thing. This could just as well be a screw up between different branches of the US military[1] as it is a peekaboo between rivals. [1]The Navy can't seem to avoid collisions at sea! And sea-faring navigation tech is hundreds of years old.