I happened to have my scanner along with me at work that day. There wasn't much to be heard, but I turned it on, hoping to hear some military traffic. Later in the day I did.
(I'm sure this isn't verbatum, and I know the numbers aren't exactly the same, but in essence, this is what I heard.)
"Single engine aircraft south of Pittsburgh, this is Cobra One. I suggest you return to the airport and land"
Perhaps a minute of silence...
"Single engine aircraft approximately five miles south of Pittsburgh, this is Cobra One, on Guard. I suggest you return to the airport and land"
Perhaps another minute of silence...
"Single engine Cessna approximately five miles south of Pittsburgh, this is Cobra One, a flight of two F-16s, on Guard. Return to the airport and land. Acknowlege by a wing wag."
Never did hear the little guy, but I assume he got the message....