There is enough evidence to suggest a pool table represents a grid.
Any captain, admiral or sailor can decide what that grid represents, then used the pool balls for diagramming a runout.
There is zero written about the history of billiards in the US military. However there is enough circumstantial evidence to suggest billiards was popular in very specific social circles.
Does billiards want someone theorizing about the historical application of a grid system for communication purposes in the early US military days?
I always wondered why sailors, grids and reference tables were so important in contemporary math classes taught by former underwater research specialists and other types of helpful people.
The new missiles extend out of the sub, it cuts down on heat feedback.
I have thought about a missile that can be reprogrammed after its initial launch. The idea being to match speed with other missiles and then detonate to be an inflight missile incapacitor. If you let me see the electric warfare kits, then it might be better to induce errors in the active missiles. Knocking out the missiles before launch is always an option electronically.