In the preferred embodiment, {TAIL ~ the vehicle} is a missile having {HEAD ~ an inertial navigation system} 
In the preferred embodiment , { TAIL ~ the vehicle } is a missile having { HEAD ~ an inertial navigation system }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD