1.   After some tinkering, US Airways is focusing on using MetroJet on Northeast-Florida routes, freeing up main line aircraft to support hub operations.

2.   Invoking the Railway Labor Act provides presidents a great deal of latitude in an age when airlines rely so heavily on hub operations.

3.   It prefers to invest in routes feeding its hub operations at Charles de Gaulle Roissy airport near Paris.

4.   Northwest has hub operations in Tokyo and Osaka and is concerned that caps on flights to destinations in Asia beyond Japan would hamper its competitiveness.

5.   Traveling a bit more and having pieces edited at a central hub operation was not exactly hardship duty.