The teenager straddles the window’s edge, calculating the distance to the dock. Dressed in a casual uniform of blue shorts and a red polo shirt, he is poised and athletic, his hand gripping a newspaper with mail nestled inside. The double-decker boat—large enough to seat 160 passengers—slows as it navigates toward the pier, but it never stops. The teenager rises and leaps from the window, right foot landing on the dock, then it’s a mad dash to the mailbox, a pivot, and another leap, left foot landing on the runner…