 What is Bergstrom's relationship with Johnson?
It took him only a few seconds to push the case into the compartment, lock it and slide the key along the floor beneath the locker. The floor continued its transmutation, and Zarwell sank deep into viscous depths. A WORK truck picked Zarwell up the next morning and he rode with a tech crew to the edge of the reclam area. When Zarwell arrived, six months before, the vitalized area already extended three hundred miles along the coast, and sixty miles inland. After its three-thousand-mile journey across scorched sterile rock, it sucked the moisture from a man’s body, bringing a membrane-shrinking dryness to the nostrils as it was breathed in.
 Johnson is the man Bergstrom wants Zarwell to help overthrow the dictator.
 Johnson is the dictator of St. Martin's where Bergstrom lives.  Johnson is the client paying Bergstrom to retrieve 
Zarwell's memories.  Johnson is the man Bergstrom wants Zarwell to help overthrow the dictator.  Johnson is Bergstrom's boss.