Just to add JFK reminded me of a third world county airport. Not enough room for passengers, bathrooms were old, signs were small, place was mess. Seemed unorganized.. Walked miles to customs. People there had attitudes as well and were rude. Not all though. In the their customs process everybody's personal belongings were all over the place.. Lot my jacket as well. I saw a Delta employee dragging a chair which had a round base from one of the stations to another across the carpet tearing it up like she did not care. That reflects the attitude of many employees there. The Glasgow to JFK flight itself was nice.