Related Clues:

• Entrances (for Bill?)
• BILL-ionaire?
• Tycoon's stage effects
• Major NPR supporter
• Forbes 400 topper
• Pearly entrance?
• Moveable barriers
• Racetrack array
• Track lineup
• Bill who co-owns the Four Seasons hotel company
• Airport sections
• Microsoft bigwig
• Major PBS contributor
• Garden swingers
• Barriers