The device is a cage made from {TAIL ~ high security steel cable} that opens to admit the helmet to be captured therein and closes around the helmet to secure {HEAD ~ the helmet} within the cage 
The device is a cage made from { TAIL ~ high security steel cable } that opens to admit the helmet to be captured therein and closes around the helmet to secure { HEAD ~ the helmet } within the cage
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH