Question: Which airport is a public airport Tri-Cities Regional Airport or San Angelo Regional Airport?
Context: Appalachian Airlines was a US commuter airline, operating out of Tri-Cities Regional Airport, Tennessee. The San Angelo Sheep Herders were a West Texas League baseball team based in San Angelo, Texas, United States that played in 1929.  They were the last team to play in San Angelo until the San Angelo Colts came about in 1948. WXK33 (sometimes referred to as San Angelo All Hazards) is a NOAA Weather Radio station that serves the San Angelo metropolitan area and surrounding cities.  It is programmed from the National Weather Service forecast office in San Angelo, Texas with its transmitter located in San Angelo.  It broadcasts weather and hazard information for the following Counties: Coke, Concho, Irion, Runnels, Schleicher, Sterling, and Tom Green. San Angelo Regional Airport (IATA: SJT, ICAO: KSJT, FAA LID: SJT) , also known as Mathis Field, is a public airport serving the city of San Angelo, in Tom Green County, Texas, USA.  The airport covers 1503 acre and has three runways.  The airport also offers free parking. Texas Pacifico Transportation Ltd. (reporting mark TXPF) is a railroad operating company in West Texas that is owned by Grupo México.  The company operates over the South Orient Rail Line under a lease and operating agreement with the Texas Department of Transportation and Texas Pacifico Transportation, Ltd.  The South Orient Rail Line runs from the Mexican border town of Presidio, Texas to San Angelo Junction.  It was constructed to interchange with Ferromex at Presidio but the Presidio–Ojinaga International Rail Bridge has not been operational since a fire damaged it on 29 February 2008.  It interchanges with Union Pacific Railroad at Alpine, Texas, and with BNSF Railway and the Fort Worth and Western Railroad at San Angelo Junction.  The Texas Pacifico company began service in March 2001.  The line has been rehabilitated from San Angelo Junction (near Coleman), Texas, through San Angelo and on to Alpine, Texas.  Capital investment is planned for the remaining Excepted track. San Angelo Stadium is a stadium in San Angelo, Texas.  Built in 1956, it holds 17,500 people, and is primarily used for football.  It is home to the San Angelo Central Bobcats and the San Angelo Lakeview Chiefs. Southeast Airlines Flight 308 was an American domestic flight operated by Southeast Airlines between Knoxville and Bristol, Tennessee, in the United States.  On 8 January 1959 it was flown by a Douglas DC-3A registered "N18941".  On approach to Tri-Cities Regional Airport at Bristol, the aircraft crashed into the Holston Mountain range with the loss of all on board. Tri-Cities Airport (IATA: TRI, ICAO: KTRI, FAA LID: TRI) (also known as Tri-Cities Airport, TN/VA), is in Blountville, Tennessee and serves the Tri-Cities area (Bristol, Kingsport, Johnson City) of Northeast Tennessee and Southwest Virginia.  The airport is governed by the Tri-Cities Airport Authority (TCAA) whose members are appointed by the cities of Johnson City, Kingsport, Bristol (TN), Bristol (VA) and both Washington County (TN) and Sullivan County (TN). The San Angelo Outlaws are a defunct American minor professional ice hockey team that played in the Western Professional Hockey League from 1997 to 2001 and the Central Hockey League in the 2001–02 season.  They were based in San Angelo, Texas and played their home games out of the San Angelo Coliseum.  The WPHL ceased operations in 2001 and the Central Hockey League absorbed the remaining ten WPHL teams, including the Outlaws.  One year later, the team was renamed to the San Angelo Saints. State Route 357 (SR 357) is a 2.7 mi , four-lane state highway that serves as a connector route from Interstate 81 (I-81) to the Tri-Cities Regional Airport in Sullivan County, Tennessee in the United States.
Answer: San Angelo Regional Airport