K. I. Sawyer Air Force Base is a decommissioned U.S. Air Force base in Marquette County, Michigan, southeast of the city of Marquette. The base, near the center of Michigan's Upper Peninsula, operated for nearly forty years and closed in 1995. The county airport, Sawyer International, now occupies a portion of the base and has scheduled airline flights and some general aviation activity. The area of the former base is now an unincorporated community and a census-designated place for statistical purposes known as K. I. Saywer AFB