High Quality Content by WIKIPEDIA articles! McEntire Joint National Guard Base or McEntire JNGB (IATA: MMT, ICAO: KMMT, FAA LID: MMT) is a military airport located in Richland County, South Carolina, United States, 10 miles (16 km) west of the town of Eastover and approximately 15 miles southeast of the city of Columbia. It is owned by the U.S. Air Force affiliated with the South Carolina Air National Guard (SCANG).