Patuxent River Naval Air Station (Trapnell Field) — Patuxent River, United States

NHK identifies Patuxent River Naval Air Station, home of Trapnell Field, located in Patuxent River, Maryland, on a peninsula where the Patuxent River meets the Chesapeake Bay. This is not a commercial airport but a major US Navy installation, best known as the home of Naval Air Systems Command and the US Naval Test Pilot School, where new aircraft and weapons systems undergo rigorous flight testing. Established in 1943, the base has hosted test programs for nearly every fixed-wing and rotary aircraft entering naval service since World War II. Its long, hardened runways and adjacent restricted airspace over the bay support supersonic and high-risk test flights. Civilian access is prohibited without military clearance, and the surrounding community is closely tied to the defense and aerospace testing industry.