{HEAD ~ A GPS antenna} is disposed coaxially of {TAIL ~ the vertical axis} and above the IFF antenna 
{ HEAD ~ A GPS antenna } is disposed coaxially of { TAIL ~ the vertical axis } and above the IFF antenna
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH