Italian A319CJ at JFK

Hey all , I was at my friends detailing shop(a little ways down the road from cosco,right acroos the street from Pizza Hut), which is really close to the field. Arriving aircraft can be seen at literally 180 feet! above the ground level (right over the shop). Anyway while watching the arrivals for 31L I saw a small airbus which I assumed to be a JetBlue A320, but as soon as it flew ahead I realised that it was an A319CJ from the Italian Goverment (Sena has a couple of pics of it). What's it doing here? you could probably see it by the 3 hangars or next to the Evergreen '47 ramp.

P.S. If you want an awesome detailing job go to the Car Spa . . . . . (and bring a Camera!).