The device is a cage made from 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 {TAIL ~ the cage} 
within
The device is a cage made from 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 { TAIL ~ the cage }
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 OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL