Eareckson Air Station — Shemya, United States

Eareckson Air Station, identified by the code SYA, is a United States Air Force facility located on Shemya Island, one of the westernmost points in the Aleutian Island chain of Alaska. Rather than serving civilian air travel, the station functions as remote military infrastructure supporting radar surveillance, air defense operations, and occasional refueling stops for military and government aircraft transiting the North Pacific. Its isolated location makes it strategically valuable for monitoring airspace near Russia, and it has historically supported missile-tracking and intelligence-gathering missions. Personnel stationed at SYA operate under harsh, weather-exposed conditions typical of the Aleutians. The airfield is not open to public or commercial air traffic and is maintained specifically for defense-related purposes under U.S. military jurisdiction.