The F-4S Phantom II fighter was developed as part of a modernization program launched in the United States in 1975 to extend the life of the F-4J fighter. Compared to its predecessor, the F-4S has significantly increased maneuverability and reduced landing and stall speeds. There are no internal guns installed, but it is possible to equip a container with a 20 mm Mk 11 mod 5 gun. The suspended weaponry is presented by the AIM-7F or AIM-9H guided air-to-air missiles, Zuni Mk 32 or FFAR Mighty Mouse unguided rockets, 250, 500, 750 and 1000 pound caliber bombs and also 500-pound Mk 77 incendiary bombs. The countermeasures represented by chaff and flares.