Joint Base Andrews — Camp Springs, United States

Joint Base Andrews sits in Camp Springs, Maryland, just outside Washington, D.C., where two runways operate at 280 feet above sea level. The installation functions as a joint military base rather than a commercial airport open to the general public. Maryland's position bordering the nation's capital gives this field particular significance, since it supports government and military air operations tied closely to Washington. Runway infrastructure here is comparable to many civilian fields of similar size, even though passenger access works entirely differently than at an ordinary commercial airport.