Answer:

hubs

Answer	Crossword Clue
HUBS	Major airports
HUBS	Focal points
HUBS	Computer centers

HUBS	Places to make connections
HUBS	Centers
HUBS	Centers of activity
HUBS	Wheel centers
HUBS	Busy airports
HUBS	Activity centers
HUBS	O'Hare and JFK
HUBS	Nerve centers

HUBS	Processing centers
HUBS	Major transfer spots
HUBS	Key airports
HUBS	Airline routing centers
HUBS	Layover cities, often
HUBS	Chief centers of important activity.
HUBS	Naves.
HUBS	Central parts of wheels.

HUBS	Centers of interest.
HUBS	Centers of activity.
HUBS	Centers.
HUBS	Active centers.
HUBS	Central parts
HUBS	Focal areas
HUBS	Naves
HUBS	Central sections

HUBS	Primary intersections
HUBS	Cores
HUBS	Meccas
HUBS	Parts of cars with caps
HUBS	Centers of wheels
HUBS	Car parts that have caps
HUBS	LAX, O'Hare and others
HUBS	Central points

HUBS	O'Hare and Dallas-Fort Worth
HUBS	JFK et al.
HUBS	Important airports
HUBS	City centers
HUBS	Major airports, e.g.