The set of {HEAD ~ power sources} provides charge to the tamper detection device and places {TAIL ~ the tamper detection device} in the non tamper state 
The set of { HEAD ~ power sources } provides charge to the tamper detection device and places { TAIL ~ the tamper detection device } in the non tamper state
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH