For anyone getting hard right now you probably will never see any of our AA bases, going forward with United you can count on ORD being the junior base for first officers and IAD being a senior base for first officers. This is a WAG based on the proposed size of ORD being bigger than IAD, and the large amount of PHL residents that are going to drive to IAD over a commute to ORD.

CA side is a toss up right now with the majority already commuting.

Details are still vague as to ORF staying open within the UA system. My best guess is that it will become a MX base with no crews like MKE and CAE.