Thus, {TAIL ~ detection} of the existence of a vulnerability is used to indicate noncompliance with an associated requirement while absence of a vulnerability is used to indicate compliance with {HEAD ~ the associated requirement} 
Thus , { TAIL ~ detection } of the existence of a vulnerability is used to indicate noncompliance with an associated requirement while absence of a vulnerability is used to indicate compliance with { HEAD ~ the associated requirement }
OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH 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