Possible Clues:

• Space pilot
• Blimp navigator
• Balloonist crashing near auto
• Pilot who makes vertical takeoffs
• Russell and Ronald return Greek letter to pilot
• One in a balloon
• Phileas Fogg perhaps making choc bar -- we hear nothing's added
• Aviator or balloonist
• High-flyer's career regularly exposed around North America
• Zeppelin pilot