The Big Reveal
This is just another example of exposing for the sunset which creates a silhouette of a person and then using your flash to reveal the subject.
Most photo books call this Fill-Flash, but the silhouette reveal language that Dave Black coined I think does a better job of describing what is happening. That is because the flash here becomes the main light and not a fill light.
Here is the lighting diagram for the photo above. I also has a CTO +1 gel on the flashes. They were held in place with the MagMod system.
Here is the photo without the flashes. How I wish I had the outfit that is behind him in this photo also in the other photo.