When I was in JFK flying back home to BUF there were major delays due to security so the gate agents had to go and find passengers who were going to miss their flight. jetBlue was very kind and assured that they wouldn't leave without any passengers that were checked in. I got to my gate just in time for boarding and the First Officer on my flight was taking our tickets and letting us on the plane, our agent was apparently busy. It gave me a chance to say hello and was nice to see all the teamwork. In the end we departed 20 minutes late but arrived on time, we had about a 40 minute flight.