 How did Joe get to 2133?
A gun is an interesting weapon; it can be hired, of course, and naturally doesn't care who hires it. The evening was dark, it was unlikely that the other even saw the circle of steel that was the mouth of the shotgun barrel, now resting on the car's window ledge. And at that moment, the universe caved inward upon Joseph Marie Prantera. There was a falling through all space and through all time. A door slid open in the wall in a way that Joe had never seen a door operate before. The other spoke precisely and slowly, the way a highly educated man speaks a language which he reads and writes fluently but has little occasion to practice vocally. Joe had been born in Naples and his mother had died in childbirth. It opened on his approach, the door sliding back into the wall in much the same manner as the room's door had opened for Reston-Farrell. He looked out, however, not on the lawns and walks of a sanitarium but upon a wide boulevard of what was obviously a populous city. Joe Prantera stared at him, said finally, flatly, "What's it all about?" Two were seated there now, papers, books and soiled coffee cups before them. Reston-Farrell, the one Joe had already met, was tall and drawn of face and with a chainsmoker's nervousness. Whatever the something else was, a slot opened in the middle of the table and a glass, so clear of texture as to be all but invisible, was elevated.
 He was transported through time from 1960 to 2133 by Brett-James and Reston-Farrell.
 He was cryogenically frozen in 1960 and awakened in 2133.  He was transported through time from 1960 to 2133 by Brett-James and Reston-Farrell.  Joe fell through a crack in time, which put him in 2133.  Brett-James and Reston-Farrell used a vortex manipulator to transport Joe to 2133.