Question: The world's largest airline (measured by fleet size) delivers scheduled airline service to where from East Texas Regional Airport?
Sentence (from "East Texas Regional Airport"): East Texas Regional Airport (IATA: GGG, ICAO: KGGG, FAA LID: GGG) is a county owned, public use airport located eight nautical miles (9 mi, 15 km) south of the central business district of Longview, in Gregg County, Texas, United States.
Relevant evidence: No