To friends and family, Reza Tabib had seemed an inspiration, proof an immigrant could launch life anew. The son of an Iranian judge, Tabib was a flight instructor at John Wayne Airport in Orange County He spoke four languages and could be counted on for level-headed advice, and a laugh.

Agents with the Pentagon’s Defense Criminal Investigative Service discovered Tabib had another talent: procuring restricted aircraft and missile parts for the Iranian military.

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