{HEAD ~ Various components} within system 2200 are connected using {TAIL ~ airway connections} and electronic/electrical connections  
are connected using
{ HEAD ~ Various components } within system 2200 are connected using { TAIL ~ airway connections } and electronic / electrical connections
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH