said {HEAD ~ source} of microwave energy and {TAIL ~ said directional, directable microwave antenna} physically forming a unitary assembly 
said { HEAD ~ source } of microwave energy and { TAIL ~ said directional , directable microwave antenna } physically forming a unitary assembly
OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH