ORF...
Not too many, ORF/PHF generally were 2,3 &4 day trips. I think PHF (part of the ORF domicile) may of had a few out and backs. As I rememer (and this was a few months ago) the out and backs tended to be the southern bases over the northern bases.
I hope it helps...
Lastly, those in ORF have to cover PHF as well, so it is very possible and more likely probable that you leave out of ORF and return to PHF a few days later...