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Still going, that will never change.

Makes sense in a military context especially - GPS can be jammed.

Similarly, the Navy still teaches celestial navigation. Officially it's the primary means of navigation, but I suspect a lot of navigators cheat.

Celestial navigation has not been a primary means of navigation at any time since I was on active duty from 1995-2018. It has only recently begun to be taught again at all -- maybe in the last 3-4 years IIRC.