Question: Duluth International Airport and Dothan Regional Airport, are used by which entity of people?
Sentence (from "Duluth International Airport"): Duluth International Airport (IATA: DLH, ICAO: KDLH, FAA LID: DLH) is a city-owned, public-use joint civil-military airport located five nautical miles (9 km) northwest of the central business district of Duluth, a city in Saint Louis County, Minnesota, United States.
Relevant evidence: Yes