Apt: AD

ALASKA	ADK	ADAK
ALASKA	ADQ	KODIAK
IOWA	ADU	AUDUBON CO
KANSAS	ADT	ATWOOD-RAWLINS CO CITY-CO
MARYLAND	ADW	ANDREWS AFB
MICHIGAN	ADG	ADRIAN LENAWEE CO
MINNESOTA	ADC	WADENA MUNI
OKLAHOMA	ADH	ADA MUNI
OKLAHOMA	ADM	ARDMORE MUNI
TEXAS	ADS	DALLAS ADDISON