Lost US Airways Express Carriers..
I recently began thinking about some of the old USX carriers that have come and gone over the years. Does anyone know what happened to them? I remember Potomac Air, Midway, and Shuttle America, to name a few. IIRC, Allegheny was merged into Piedmont (or was it PSA?). Does anyone know what happened to any of these Express carriers, or know of any others that I haven't mentioned that have come and gone?