When it is time for {HEAD ~ another technician} to install the tap fiber, it is not necessary for {TAIL ~ the technician} to touch any of the input optical fiber 130 that has been installed in the raceway 116 
When it is time for { HEAD ~ another technician } to install the tap fiber , it is not necessary for { TAIL ~ the technician } to touch any of the input optical fiber 130 that has been installed in the raceway 116
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH