RIM-116 Rolling Airframe Missile
The RIM-116 Rolling Airframe Missile ( RAM ) is a small , lightweight , infrared homing surface-to-air missile in use by the German , Japanese , Greek , Turkish , South Korean , Saudi Arabian , Egyptian , Mexican and U . S . 
<triplet> RIM-116 Rolling Airframe Missile <subj> infrared homing <obj> guidance system