All of those cities have had routes replaced with RJ flying or service totally stopped by United Airlines.
All of those cities once had high paying United Airlines jobs and planes landing there... now they get crap. Now United is loosing to their competitors.
ACA may be a wonderful company to short on the stock market, but I for one, am glad I didn't go work for them and I pitty anyone who does work for them west of IAD. AWAC used to be a fine operation as well, but we're seeing growing pains. Great Lakes did the same thing, and I was with them DURING the growing pains, and let me tell ya... 5A - 11PM shifts @ ORD aren't fun.
-nate