ADW — ANDREWS, MD

BAL — BALTIMORE, MD

EMI — WESTMINSTER, MD

FDK — FREDERICK, MD

FND — ELLICOTT, MD

GRV — GRANTSVILLE, MD

HGR — HAGERSTOWN, MD

NHK — NAS PATUXENT RIVER, MD

NHK — PATUXENT, MD

OTT — NOTTINGHAM, MD

SBY — SALISBURY, MD

SWL — SNOW HILL, MD