{TAIL ~ Reference terrain altitude maps} are converted by a reference map transformation to data which correlates the reference map to {HEAD ~ the altitude} of the missile 
{ TAIL ~ Reference terrain altitude maps } are converted by a reference map transformation to data which correlates the reference map to { HEAD ~ the altitude } of the missile
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH