Thus, {HEAD ~ the mechanism} does not require {TAIL ~ any decreased motor volume} in the missile or booster 
Thus , { HEAD ~ the mechanism } does not require { TAIL ~ any decreased motor volume } in the missile or booster
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH