The Department of Justice and several attorneys general from six different state filed a lawsuit today against the $11 billion dollar merger between American Airlines and US Airways. In the complaint the DOJ says the merger would rise flight fares for consumers and hurt competition. If the merger is allowed to go through it would create the world largest airline. A prime example of how this merger would kill competition is Ronald Reagan Washington National Airport, where the two airlines control 69% of take and landing strips along with 63% of the outbound nonstop routes. How can other airlines offer competing services to customers if one airline owns most of the landing strips?