KIAD: Dulles International, Washington DC.
KLUK: Cincinnati Muni, OH
KTCL: Tuscaloosa Renional, AL
I don't know of many rampers who fly these distances. The only common link I can find is;
KLUK is 94 miles to KIND where there is a Signature FS.
KTCL is 159 miles to KFTY where there is a Signature FS.
I tried Landmark (the other FBO at IAD) and there is nothing close to the other two airports.
Anyway, I doubt you are a ramper who flies around the country. If you are then you are the first. I bet you are a Signature employee trying to see if Avantair is honoring their contract. Weird no matter what.