Cape Cod Coast Guard Air Station, designated IATA code FMH and ICAO KFMH, is a United States Coast Guard air facility located in Falmouth, Massachusetts, on Cape Cod. The installation is primarily a military and federal government airfield, home to Coast Guard aviation units conducting search and rescue, law enforcement, and maritime patrol missions across the northeastern United States and surrounding waters. The airfield was historically associated with Otis Air National Guard Base, which shares or previously shared the same airfield infrastructure. The facility has long played a strategic role in northeastern air defense and emergency response. While it carries an IATA code suggesting some civil aviation use, it is not a commercial passenger airport in the traditional sense. The station supports rotary-wing and fixed-wing aircraft operations essential to Coast Guard missions. Its location on Cape Cod provides advantageous positioning for maritime search and rescue over the Atlantic Ocean, Nantucket Sound, and surrounding coastal regions.