Question: how is Northwest Arkansas Regional Airport and Mammoth Yosemite Airport related?

Related documents: [0]  [DOC] Northwest Arkansas Regional Airport (IATA: XNA, ICAO: KXNA, FAA LID: XNA) is a public use airport in Northwest Arkansas, United States. It is 15 NM northwest of the city of Fayetteville and 10 NM northwest of the city of Springdale. The airport, located in Highfill, Arkansas, is also near the cities of Bentonville, Rogers, and Springdale. It is commonly referred to by its IATA code, which is incorporated in the airport's logo as "Fly XNA". [END] 
[1]  [DOC] Mammoth Yosemite Airport (IATA: MMH, ICAO: KMMH, FAA LID: MMH) is a town-owned public airport seven miles east of Mammoth Lakes, in Mono County, California. Also known as Mammoth Lakes Airport or Mammoth-June Lake Airport, it is mainly used for general aviation, but has scheduled passenger flights operated by two airlines, one of which only serves the airport on a seasonal basis during the winter sports season. [END]  
Answer: public
public