detect {TAIL ~ a third number} of {HEAD ~ shock events} in response to the shock detector operating at the increased shock threshold; and 
detect { TAIL ~ a third number } of { HEAD ~ shock events } in response to the shock detector operating at the increased shock threshold ; and
OTH 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