Related Clues:

• JFK et al.
• Parts of cars with caps
• Bike-wheel parts
• Bike shop supply
• Rim supports
• O'Hare and JFK
• ORD and ATL, e.g.
• Ship's wheel parts
• Ethernet devices
• Layover cities, often
• Network connections
• Nerve centers
• Busy centers
• Radial supports on a wheel
• Over the South it was said they're at the wheel