I love Global Entry. I hate the TSA. I am very appreciative of what I see as an improvement in the DL staff at JFK to premium passengers. So I returned from IST yesterday w/a scheduled connection to the 9 PM to DCA. My hope was that we would get in early enough to allow me to beg, plead, and grovel to take the 5:45 flight to DCA instead. Due to 70-100 mile/hour headwinds for the entire return flight an early arrival didn't happen - we arrived pretty much at scheduled time. Global Entry was a breeze, and once again proved it's worth. I literally spent 20 times as long dealing with DL's contract security at IST (bad enough that I have no desire to fly DL out of IST again, but don't get me started) and TSA at JFK in the T4 recheck area (simply awful, 20+ minutes including a "random" secondary). It was literally 5 minutes from plane to exiting Customs. It was less than 45 minutes to departure time for the 5:45, so I stopped at the Gate 11 customer assist area to see if they could rebook me. The first agent I talked to looked it up and tried, but didn't quite understand how to do it (apparently it was under gate control, as I expected). The next agent over told her to call a certain extension and tell them that a "platinum customer" wanted to change flights & please rebook it. First agent mentioned something about me being on an international flight, and the second agent said not to worry about that, just call and tell them to assist the platinum customer. From that point, it took the agent longer to figure out how to assign a seat and print me a boarding pass than it did on the phone to get me rebooked. I did my best "NYC walk" to hoof it over to Gate 25 (T2) quickly & ended up waiting in the gate area 10 minutes to board. To top it off, the scanner spit out seat 1C on the CR9, giving me the upgrade. This is a 180-degree turnabout from my last couple of experiences trying to SDC a connection at JFK. In fact, I've avoided DL JFK connections through JFK for just this reason. Very, very good progress toward treatment of elites at JFK (I was on a Z-upgrade/M-fare, which did not seem to be a factor as the only thing noted was my status). So thanks, Delta, for the improved customer service. Now, Delta, you need to support some kind of "Registered Traveler" program at TSA to minimize the crap that low risk (20+ year elite) passengers have to deal with.