Question: Hagerstown Regional Airport and McClellan–Palomar Airport, are which type of airport?
Sentence (from "Hagerstown Regional Airport"): Hagerstown Regional Airport (IATA: HGR, ICAO: KHGR, FAA LID: HGR) , also known as Richard A. Henson Field, is a county owned public use airport in Washington County, Maryland, United States.
Relevant evidence: Yes