“I’m not sure that real situational awareness can be taught, but living in a truly dangerous environment does tend to naturally enhance the ability.”
It fades with age, too. Nowadays people can walk up behind me, and I don’t even know they are there until they put their hand on my shoulder.
I hate it.
I know what you mean. My radar is still pretty good, but it isn't nearly as sensitive as it once was. I used to have eyes in the back of my head.