If the detected number shock events falls below the lower event threshold , then the shock threshold for the shock detector is decreased in order to increase {HEAD ~ the sensitivity} of {TAIL ~ the shock detector} 
If the detected number shock events falls below the lower event threshold , then the shock threshold for the shock detector is decreased in order to increase { HEAD ~ the sensitivity } of { TAIL ~ the shock detector }
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 OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL