From WTMJ Radio:
http://www.620wtmj.com/news/local/139058794.htm
These service reductions are not easy for any of us, as they affect some of our team members; however, they are fundamental and necessary changes for Frontier, which will enable significant profitability improvements and generate greater job opportunities and security for the majority of our 5,000 employees.
I presume that the "team members" who are affected by the service reductions are at MKE, and the ones with "greater job opportunities" are at DEN.