I don’t think that our current CBA has any language in it about a dual-airport base. I’ve searched a lot and haven’t found it. Which leads me to believe that that is possibly the real reason they closed when they shifted ops to MDW. Maybe the company said they wanted to start doing dual bases in PHL/TTN, MIA/FLL, and MDW/ORD, but ALPA wasn’t interested. Ok, fine, then we’ll just shut it down and displace in order to easily staff up ATL, if we are going to displace anyway. This is the only reason that actually makes sense in context, and it also explains why not a single person has been willing to actually tell the pilots whose lives were upended what actually happened.