 Instead, the guidance was on the launcher, which communicated with the missile using a radio command system.This meant the missile itself had few electronics in it, and the expensive systems were not expended when firing.Shorts, additionally, claimed that this system made it suitable for head-on engagements, while infrared homing systems of the era, like the FIM-43 Redeye, were only useful in tail-chase engagements, where the missile's short range would make it almost useless.