The improvement comprises means for locating a target with {HEAD ~ respect} to {TAIL ~ the generation subsystem} and means for locating an aiming point in the image display subsystem with respect to the image generation subsystem 
The improvement comprises means for locating a target with { HEAD ~ respect } to { TAIL ~ the generation subsystem } and means for locating an aiming point in the image display subsystem with respect to the image generation subsystem
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH