Iranian F-4s, the figurehead of the Islamic Republic of Iran Air Force (IRIAF) since the 70s, such a great aircraft. Interesting to see in this pciture is that the lead aircraft (3-6673) is equipped with the Target Identification System Electro - Optical (TISEO), which is installed in the leading edge of the left wing. The TISEO allows to detect air targets at long distances. Wingman 3-6538 lacks this modicifaction.