While shooting the building, a C-17 Globemaster (thats what it appeared to be from the ground) was making its landing approach to Louisville International Airport. The 123rd Airlift Wing, Kentucky Air National Guard is stationed at KSDF. We see C-130’s flying overhead all the time, but not the C-17 very often. I would guess that they are preparing to fly personnel and supplies to Haiti , but I cannot verify this information. You can read about the 123rd KYANG here.