Remember, Manassas is a world center for urology ~ this is where Mr. Bobbit got chopped, and fixed, in the same night. Not going to find that sort of thing just anywhere ~ microsurgeons, urologists, etc.
I can see these guys being misled by a guy working at JFK as a janitor or a cabbie finding themselves as fill-in on a training flight in a light plane to Manassas instead of Montana (which probably looks pretty much the same in Arabic).
Happens all the time.
BTW, you get to Indianapolis on a Grayhound, and ask for the bus to Bloomington, they go to Bloomington MN and IL, but not IN.