The middle member may comprises a composite of {HEAD ~ alternating layers} of {TAIL ~ wire trusses} and polystyrene foam 
of
The middle member may comprises a composite of { HEAD ~ alternating layers } of { TAIL ~ wire trusses } and polystyrene foam
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH