Related Clues:
- Microsoft's Bill?
- 'The Moment of Lift' author Melinda
- Flight board column
- Entryways of fences
- Stadium entry points
- Richest person in the world before Bezos
- Openings for one from Stone Age
- Arrival or departure areas
- Some security guards' posts
- Openings in fences
- Philanthropist Bill or Melinda
- Moveable barriers for Bill
- Exits at airports
- Places to wait in airports
- Airport array