Comment by gosub100
About 5 years ago before ATC recordings became mainstay on YouTube, there was an American pilot that declared an emergency at JFK and very firmly said "we are turning back and landing NOW. Get the aircraft OFF all runways".
He was low in fuel and also frustrated with Kennedy ATC because he declared "minimum fuel" earlier and was still getting vectored around. (I know "minimum fuel" is not an emergency and has a very precise meaning).
They must have been very close to running out. But it was a valuable lesson learned in speaking up before you get to that point.
I’m guessing that pilot had also been taught the lesson of Avianca 052, which crashed at JFK because the FO / captain did not explicitly declare a fuel emergency.
JFK ATC in particular has an enormous workload with many international flights, combined with direct, even conflictual at times, NY communication style. It puts the onus on the pilot for conveying the message to ATC, rather than ATC for extracting the message from the pilot.