You can’t see them then.
A former boss of mine who had served in the (segregated) US Army in Italy in WWII referred to them as “night fighters”; he said that is what they told the Italian civilians the black troops were used for...
“You can’t see them then.”
That reminds me of an early, very un-PC routine of Cosby’s. He couldn’t find his wife because of the color she’d painted the bathroom,,,, I think it was,,,,,,,