Back in February 2013, it was announced that long-time legacy carrier US Airways would be merging with American Airlines to create what would become the world’s largest airline. Doug Parker, the CEO of US Airways, would soon become the chief executive of the newly-founded American Airlines Group (AAL). The integration process for bringing together two of the nation’s largest airlines under one roof was unbelievably complex, and today, American Airlines exists as a dynamic fusion of two airlines that once existed with completely different operational philosophies and strategic thinking.