Cubs
No, not baseball, but Pipers! [WSJ: Subscription Required]
“Zero Six Hotel has a 12-gallon fuel tank. That’s enough for three hours, but the Federal Aeronautics Administration requires me to keep 30 minutes in reserve, and a cautious pilot doubles that. The wind is always blowing — almost always to the disadvantage of a Piper Cub — and airports aren’t spaced as closely as Exxon stations.”