Question: Which United States Airforce installation has a large cantilever hangar and is located in northeastern Maine?
Sentence (from "Campbell Army Airfield"): Campbell Army Airfield (IATA: HOP, ICAO: KHOP, FAA LID: HOP) is a military airport at Fort Campbell, which is located near Hopkinsville, a city in Christian County, Kentucky, United States.
Relevant evidence: No