Related Clues:

• Office of the U.S. president
• Washington office shape
• Airbus, e.g.
• Lionel train layout, often
• Shaped like some mirrors
• High flyer
• Stretched circle
• ___ Office (White House room)
• Air Force One, for one
• Like many an amphitheater
• Airborne vehicle
• Not a perfect circle
• Lionel train path, often
• Like most orbital paths
• Racetrack path