Iran Says It Is Building Copy of Captured US Drone A senior Iranian commander says the country has reverse-engineered an American spy drone captured by Tehran's armed forces last year and has begun building a copy. Gen. Amir Ali Hajizadeh, who is chief of the aerospace division of the powerful Revolutionary Guards, was quoted Sunday by the semi-official Mehr news agency as saying that experts are also recovering data from the U.S. RQ-170 Sentinel captured in December in eastern Iran.