S2, E5: Mysterious science abounds and almost no one is immune from surprises. Aaron and Rachel speculate on the extreme effects of Nano technology, while he also confides in Cynthia (guest star JESSICA COLLINS). Meanwhile a figure from Miles’s rugged past, Texas Ranger John Fry (guest star JIM BEAVER) reemerges. Fry could be Miles' chance to bring down the Patriots in a big way, however Fry might need some convincing. Charlie has a surprise for Miles and her mother, while Secretary Allenford (recurring guest star NICOLE ARI PARKER) holds a secret important to Neville.