For the record:
There were once 2 separate airlines: ValuJet and AirTran.
Then ValuJet crashed in the Everglades due to illegal O2 canisters.
So ValuJet arranged a merger with AirTran & the combined airline uses the AirTran name even though ValuJet was larger & dominant in the merger. One could say that ValuJet bought the AirTran name. But it wasn't a change to a newly coined name.
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Play the travel game 3 vacations into the future!