Jason's side of Leonida
Rockstar places Jason Duval in the Keys after his Army service, working for local drug runners. Brian Heder is part of that world: Rockstar describes his boat yard, long-running smuggling business, and the arrangement that lets Jason stay at one of Brian's properties. These biographies make the Keys a useful starting point for the characters, without supplying a mission order.
From the official region to smaller places
Rockstar's media library labels a set of images Leonida Keys. The gallery below shows official material from that group. For closer context, follow the separately documented Brian's Marina and Jason's House. Those point pages explain their own location evidence; this region page does not turn community positions into official coordinates.
What is still open
The printed area name and character connections are established in Rockstar material, but no official region boundary or center point is published here. Use the official regions guide to compare the named areas, and the community map when you want a clearly labelled reconstruction.
