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