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