british taxi driver convicted of making roadside bombs during the height of the iraqi insurgency learned his sentence for killing an american soldier. frederick plankin reports on the long, pain staining investigation which could serve as a message to other bomb builders. reporter: showing no emotions when the judge handed down the sentence. life in prison with a minimum term of 38 years. the court believed it proven that the 3-year-old british cab driver was part of a bomb making ring in iraq in 2007. one of the improvised explosive devices or ieds, they manufactured, killed sergeant first-class randy johnson. when it struck the striker vehicle he was riding in close to camp liberty near baghdad. jon left behind a wife and two young children. his widow claudia wrote a note to the court after the man was convicted saying thank you so much. it is a big relief to know that