Sure, Al could have interviewed actor Dan Stevens, former baseball great Daryl Strawberry, author Danielle Steele, etc. But we know that the Fear the Walking Dead creative team looks for ways to create connective tissue like this when applicable, so D.S. should only mean one thing.
While the letters “D.S.” could technically stand for a plethora of different things that have nothing to do with fan-favorite characters from previous seasons, it almost feels a little too on the nose to stand for anything but “Daniel Salazar,” especially considering the fact that Al’s videos also included a reference to Abraham and Eugene having been subjected to her interview process when they were still in Texas.