{HEAD ~ The primary inner shell} 30′ is formed with {TAIL ~ a coaxial sleeve extension} 151 connected to its sidewall at the shells secondary end 34 
is formed with
{ HEAD ~ The primary inner shell } 30′ is formed with { TAIL ~ a coaxial sleeve extension } 151 connected to its sidewall at the shells secondary end 34
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH