The document discusses the merger between American Airlines and US Airways which was announced in February 2013 and completed in December 2013. It provides background on both airlines, the rationale for the merger which was to create the world's largest airline, and the legal challenges in obtaining regulatory approval. The merger combined the two airlines under the American Airlines name and brand, with US Airways management taking over operations from American's headquarters in Fort Worth, Texas. However, full integration was delayed as labor unions like the IAM had not yet reached new contracts with the combined airline.