I was (unfortunately) at DTW on Saturday, but the place seemed about normal (except for the picket line) with lots of folks standing in NW check-in lines (exchanging and/or refunding tix????). I was at the far end though, away from the Northwest gate areas.

I have felt that feeling, though, Addict. Coming into ORD and IAD on redeyes at 5 am and walking through deserted terminals is not really creepy, but sort of disconcerting...