Catch up with vintage JJJ in Manhattan Noir for this mission.
Like 'Pictures for Parker," this is multipart task list, but the first one requires you to get a snap of a swimming NPC. He's usually in the water on the Nueva Yorkish side of the spire, but you can easily pinpoint him by just pulling out your camera, and looking for the brackets.
Once located, even a long distance pic will fulfill the mission requirements- just make sure the brackets are green before you shoot.
Return to Jameson to unlock him as a character.
You can return here for other assignments, but they don't count toward completion percentage, or unlocking the local box- they just yield studs.