Don't know if it's true but makes a good story.
Billy Bob was sent to navigator school in the airforce. After barely graduating he was assigned to a bomber piloted by an much older fellow. Upon boarding the aircraft the pilot takes his weapon out of his holster and sets it next to him. He asks BB if he knows what its for? BB says no. The pilot says its for navigators who get him lost. BB takes his gun out and puts it on the navigators table. The pilot asks whats that for? BB says to tell the truth sir I'll know we're lost before you do.

__________________
Well done > well said