Parents of DAL employees travel as S3B's or S3's when you accompany them.
My guess would be this is a Connection Carrier employee that got the big hose job after the pass benefits were renegotiated. I loved my pass benefits when I worked for ASA when it was a wholly owned subsidiary of DAL, but find the new deal far less appealing. It barely warrants the designation of a benefit anymore. Don't get me wrong, it's awesome to have pass travel benefits, but the agreements keep getting far less beneficial to the employee these days.