Question: What is the former name of the air marketing brand for which Unalakleet Airport serves as a hub?
Sentence (from "Unalakleet Airport"): Unalakleet Airport (IATA: UNK, ICAO: PAUN, FAA LID: UNK) is a state-owned public-use airport located one nautical mile (2 km) north of the central business district of Unalakleet, a city in the Nome Census Area of the U.S. state of Alaska.
Relevant evidence: No