Shown here is the full screen view of ASDE-X display at JFK. At the time runway 4L was used for departures and 4R for arrivals, most of which turn off and hold to cross 4L at taxiway Golf as they proceed to their gate. This is run of the mill stuff for ATC but for aviation enthusiasts and future ATC'ers to see what the fine folks at JFK tower look at as they do their job is really neat