PD-
It's Hyatt Legal Services. Division of MetLife. The MetLife connection is how Delta people qualify.
You can find the info on the DeltaNet under Employee Info / Delta Perks / Insurance / Legal Services.

It is a great deal. You get a will for absolutely free. Everyone should have a will.

One caveat: I wouldn't go through them if you have some highly complex estate planning you are trying to do. They are great at the basics but if you have trusts or generation skipping bequests or a QDRO that binds a defined benefit pension or anything like that then you probably already have a lawyer anyway.