each first and second shield means further including a respective first and second edge means for pivotal securement together for permitting pivotment of {HEAD ~ the first shield means} relative to {TAIL ~ the second shield means}, and 
relative to
each first and second shield means further including a respective first and second edge means for pivotal securement together for permitting pivotment of { HEAD ~ the first shield means } relative to { TAIL ~ the second shield means } , and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH