i am a diabetic. there no vending machines in sections d & e. after 2300 hrs everything is closed down. police swept the concourses to make sure no-one spent the night in the terminal. my flight on (u.s air) was on time, and i was told to report to gate e-4, which i did. the airline ticketing individual (female) said my flight was on time. five minuted before departure time, it was anounced the flight would be delayed thirty minutes, ok i guess. five minutes befor the new departure time, it was anounced the flight was cancelled, no reason given. having checked all possible excuses, the only one remaining, was there were only a few passangers to the final destination, and u.s. air. didn't want to spend the fuel and time for us. no compensation was offered, that we were on our own. end of case.