Iran has reverse-engineered U.S. spy drone TEHRAN, April 22 (MNA) -- Iran has successfully reverse-engineered an advanced U.S. spy drone that violated the country’s airspace in 2011, the commander of the Aerospace Force of the Islamic Revolution Guards Corps, Brigadier General Amir Ali Hajizadeh, announced on Saturday. Iran announced on December 4, 2011 that an advanced RQ-170 unmanned U.S. spy plane had been brought down by the armed forces of the Islamic Republic but did not say when the incident occurred. The wingspan of the radar-evading drone is 26 meters, the le