Saying Terrorism Was Not Involved, A Federal Agency Has Confirmed That A Johnson City Medical Office Was Bombed And A Person Is In Custody. The Explosion And Fire At Victory Orthotics And Prosthetics On Knob Creek Road Shut Down The Business For Awhile.Police Said Christopher Wayne Alexander Was Caught Just Minutes After The Bombing Around Ten P.M. Sunday Night. Alexander, Who Owns Alexander Prosthetics And Orthotics On East Stone Drive In Kingsport, Is In Federal Custody. He’s Charged With One Count Of Knowingly Possessing A Pipe Bomb. A Preliminary Hearing Is Set For Alexander For July 15th.