Detroit, Kalamazoo, Flint, Grand Rapids and others plus some in the Upper Peninsula too.
Detroit and grand rapids.
There are no chief airports in Montana.
the chief airports are in Birmingham and Huntsville.
the chief airport is in Anchorage.
the chief airport is in Jackson.
the chief airport is in Albuquerque.
Boise.
Metairie.
Boston.
Portland.
Indianapolis.
Minneapolis.
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