I haven't really been around long enough to judge the fluctuations in passenger loads. I did take 32 out of SHD the other day, but those days are few and far between. MGW continues to be the big seller by far. I often see 15 - 20, which is huge up here.
I can speculate that the drop in SHD you mentioned to the lack of performance into SHD. When a plane is mxd or something happens that threatens to halt some operations SHD is the sacrificial lamb. It's a 2 hour drive from Dulles. So they cancel SHD and shuttle the passengers over, hopefully not in one of those ****hole ABC Cabs.
I'm just hoping they don't close Dulles. I kinda like it up here. But if they do I'll just go to Commutair after I cash in my bonus.