If you work for a DCI you are an H2. Currently there's only 1 - H1 (Comair). All DCI's are H2 and OAL's are H3's. As I understand it this mistake has been brought to Delta's attention and is being worked on. When you list tell the Gate agent you are an H2 or DCI. Otherwise a UAL, FedEx, UPS, JB, VA, etc pilot with an earlier TOC will get the jump over you.