{HEAD ~ The emergency transceivers} can be capable of transmission of spread spectrum encoded messages, and can be actuated by {TAIL ~ a user} to send a distress message 
actuated by
{ HEAD ~ The emergency transceivers } can be capable of transmission of spread spectrum encoded messages , and can be actuated by { TAIL ~ a user } to send a distress message
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH