I looked at satellite views of the three large airports near Chappequa, and all of them, Newark, JFK, and LaGuardia have concrete landing strips, with blacktop edges, and yellow lines marking the turns, similar to that photo.
Dulles airport does not have those yellow lines and patterns.
Since some have said a white sign in the grassy area reads "gate 41" my guess is that it is JFK, but so far I havent found the exact spot in that airport that matches that photo.
(for a while I thought this was the Dallas area, because the Dallas Love airport is near longitude 964389, but I didnt find airports near there with this stripe pattern around the runways)
That airport has been identified by the 8channers as one in Vietnam. Unless you’re talking about another airport.