Iranian military officials at Iran's underground air force base, called "Eagle 44," on February 7.Iranian Army/Handout/Anadolu Agency via Getty Images Iran unveiled an underground air force base called "Eagle 44" for the 44th anniversary of the Iranian revolution. The underground base is said to be the first large enough to host fighter jets and one of several being built. As part of the celebrations for the 44th anniversary of the Islamic Revolution, Iran unveiled an underground air force base, dubbed "Eagle 44", which, according to Iranian news agencies, is the first of this kind large enough to host fighter jets, bombers and drones.The Iranians claim this is one of their most important bases, built deep underground to protect from air strikes its jets equipped with long-range missiles.According to Fars News Agency, the base "consists of various sections, such as an alert area, command post, warplane hangars, repair and maintenance center, navigation and airport equipment, and fuel tanks.