{HEAD ~ Reflected pulses} from a missile are received by {TAIL ~ each} of the four antennas and then supplied by a radio frequency switch to a scalar scoring system which provides an analog video signal to four analog switches 
are received by
{ HEAD ~ Reflected pulses } from a missile are received by { TAIL ~ each } of the four antennas and then supplied by a radio frequency switch to a scalar scoring system which provides an analog video signal to four analog switches
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH