Answer:

ord

Answer	Crossword Clue
ORD	California's Fort ..
ORD	California's Fort ...
ORD	Chicago airport designation

ORD	Fort .., CA
ORD	Fort ...., CA
ORD	California fort
ORD	Fort ..., CA
ORD	City reg.
ORD	O'Hare's label
ORD	Fort ... (3)
ORD	Chi airport code

ORD	No. ending with "-th"
ORD	Logan : BOS :: O'Hare : ..
ORD	Fort ... (former California landmark)
ORD	Chicago airport code
ORD	Command: Abbr.
ORD	Former California fort
ORD	Old California fort
ORD	One-time fort near Monterey

ORD	Law: Abbr.
ORD	Old Western fort
ORD	Old fort near Monterey
ORD	Old western fort
ORD	Western infantry fort until 1993
ORD	Cmd.
ORD	Former western fort
ORD	Old West Coast fort

ORD	Union Army officer Edward for whom a fort was named
ORD	Former Monterey Bay fort
ORD	LAX : Los Angeles :: .. : Chicago
ORD	Diner req.
ORD	Traffic reg.
ORD	Windy City airport code
ORD	California fort named for a Union general
ORD	Fort ... (old California military base)

ORD	Former fort near Monterey
ORD	Marking on luggage headed to O'Hare
ORD	O'Hare airport designation
ORD	La Guardia : LGA :: O'Hare : ...
ORD	Tag on some Chicago-bound luggage