Now Playing: Nathan Carman Leaves Interview When Asked About Boat Sabotage Allegations

Now Playing: Rescued Boater Nathan Carman Insists He’s Innocent in Grandfather’s Death

Now Playing: Nathan Carman describes seeing mom for the last time at sea: Part 1

Now Playing: Asperger’s may account for Nathan Carman’s behavior after sea rescue: Part 2

Now Playing: Rescued boater Nathan Carman on his childhood, running away from home: Part 3

Now Playing: Police question Nathan Carman in grandfather John Chakalos’ murder: Part 4

Now Playing: Nathan Carman denies causing the deaths of his mother and grandfather: Part 5

Now Playing: Insurance company won’t pay Nathan Carman’s claim for boat lost at sea: Part 6

Now Playing: Man prepares for remarkable hand transplant surgery: Part 3

Now Playing: Hollywood mogul falls ill, close to death in less than 24 hours: Part 1

Now Playing: Doctors struggle to diagnose man’s mysterious illness: Part 2

Now Playing: Man has successful hand transplant after almost 18-hour surgery: Part 4

Now Playing: Hand transplant recipient, doctor get surprised by Captain Sully: Part 5

Now Playing: Hand transplant recipient thanks doctors who first saved his life: Part 6

Now Playing: Aretha Franklin: A master in the art of making an entrance: Part 6

Now Playing: Aretha Franklin’s closely guarded private life: Part 5

Now Playing: Aretha Franklin and the art of her performance: Part 4

Now Playing: Aretha Franklin makes acting debut with ‘Blues Brothers’ role: Part 3

Now Playing: Aretha Franklin, a legend in the making: Part 2

Now Playing: Aretha Franklin, ‘Queen of Soul,’ dies at 76 : Part 1