Harrisburg International Airport and Tucson International Airport, are which classification of airports?
Harrisburg International Airport Harrisburg International Airport (IATA: MDT, ICAO: KMDT, FAA LID: MDT) is a public airport in Lower Swatara Township, Pennsylvania, nine miles (15 km) southeast of Harrisburg. It is owned by the Susquehanna Area Regional Airport Authority.
Del Norte International Airport Del Norte International Airport (IATA: NTR, ICAO: MMAN) is an airport located in General Escobedo, Nuevo León, working as a secondary airport for Mexico's third largest city, Monterrey.