Fred's a C-5A Galaxy, correct?

Anyway, I live in GSO, and for the past few months, a C-5 has been showing up in the pattern here around lunch time a few days a week doing approaches for about 45 minutes. I'm thinking he must be coming over from Pope AFB and doing training, but I'm curious as to why GSO?

He flys right over my neighborhood on downwind at about 1000-1500ft and it's pretty cool, especially the sound of the engines (real screamers), and most of my friends get a kick out of it so no one really minds, but it's something fairly new.