It was all coach, with a variety of 733s, MD-80s, and DC-9s. I think a few of the 735s *might* have been in the CO Lite fleet for a short time right after they were delivered. I think some of the 737-100s and -200s were used as well. There was the hub at GSO, and there were CO Lite flights out of IAH and the other hubs as well. Part of the problem with the concept was that it was flying a bunch of routes that were very low demand, with a lot of frequency. And then there was the crazy scheduling that had some flights on a route operating as regular CO, and others operating as CO Lite. Now, sure, they do that now with ERJs, but this was a little different because CO Lite used the same models of aircraft that regular CO used. So if a schedule showed a DC-9, it might be CO Lite or it might be regular CO. And this was in the days before the Internet and online seat maps, so it wasn't always easy to tell which level of service you were getting.