The company probably surprised AA with the UA announcement and still needs to come up with a draw down plan for our AA flying. DCA will probably be the first to go this summer.
We will probably see the closure of PHL/DCA/ORF as crew bases once the transition starts, ORF will be a RON MX base only as well as MKE and CAE. The UA flying out of our AA bases is not enough to support crew bases, people who live in PHL/ORF should expect to learn how to commute. If you're butthurt about suddenly having to commute, ask the DEN/ORD guys what it was like back in 2006.