{TAIL ~ an inflator housing} having {HEAD ~ two walls}, an inner wall and an outer wall, the inner and outer walls forming a combustion chamber 
{ TAIL ~ an inflator housing } having { HEAD ~ two walls } , an inner wall and an outer wall , the inner and outer walls forming a combustion chamber
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH