Thanks Van another thought, and one especially important under stress and trying to maintain proper situational awareness, with factors such as tunnel vision and auditory exclusion etc. Under the dump , this can be near impossible . However.....
while not my metaphor I know a good idea when I steal it , unfortunately I forget the source or I'd credit the author
But basically the statement goes.
attention is a like a spotlight, it highlights your focus , but it leaves everything else in darkness.
we need to be very aware where we are shining our spotlight , and what we are excluding by narrowing our focus.
we must keep a broad view and like positional footwork be aware of our blind-spots of attention as much as position.