NS diesel shop in Chicago?

does NS has a diesel shop/locomotive maintenance facility in Chicago area?
i thought they have one close to Midway airport somewhere.
anybody has any ideas where it is exactly located?
later.

NKP had a diesel shop at Calument yard, which is not near Midway - it's more like 103rd and Stoney Island, behind Lake Calumet. I don't know if any of the former Wabash properties had a diesel shop - maybe at Landers yard, along Southwest Highway, which is near midway. I don't see such on a google map though.