Piedmont Airlines, Inc. is an American regional airline headquartered at the Salisbury Regional Airport in Wicomico County, Maryland, near the city of Salisbury. The airline is a wholly-owned subsidiary of the American Airlines Group and it is paid by fellow group member American Airlines to staff, operate and maintain aircraft used on American Eagle flights that are scheduled, marketed and sold by American Airlines. Piedmont also provides ground handling and customer service for airports in the northeastern and western United States.
SOURCE: Wikipedia