When I was a kid, they taught us in school to fire three shots with a rifle if we were lost.
So, Ole and Knut go hunting in the swamp. Ole says to Knut, "If you get lost, just shoot three times in the air, and I'll come getcha."
Five days later, Knut comes dragging out of the swamp and finds Ole drinking in the bar with the sheriff and the search team.
"I did what you told me," Knut says. "I shot three times in the air every hour or so, but it didn't work. Whatsa matter? Couldn't ya see my arrows?"