I work for SkyWest, but we fly regional flights for United, Delta, Alaska, and AirTran for a little longer - they'll be ending that by early September with the Southwest merger. There are also quite a few flights out of IAH now, which I believe are considered CO flights (we use your system to list for them). Because I work the United Express flights, I only get benefits on United and all those other guys IF they're operated by SkyWest. It's a shame I don't work DL flights instead, since all SkyWest employees get UA benefits while we only get bennies on other airlines if we're dedicated to those operations.