JFK 767T flies out of all three NYC airports but is primarily a mixture of transcon 757 PS flying (JFK) and international 767 (EWR) with a very small sprinkling of domestic out of LGA and EWR. Statistically, if you are a 767T you are going to become very familiar with the layovers in LHR, FRA, ZRH, LAX, and SFO.

The fact that the flying is out of three different NYC airports is probably a clue why it goes so junior for guys on RSV.