John Harrison sounds like an auto accident attorney whose firm puts those 1-800 "I Can Help" commercials on your local channels during Jerry Springer.
"Injured by starships falling from the sky? Ever been hurt by an unidentified man seeking vengeance? Call the John Harrison Law Firm immediately....we'll get results you can count on!
So....shall we begin?"
Nah. You're thinking of his brother Saul Harrison. Works out of Albuquerque. "Better call Saul"