The retaining devices are released on booster thrust termination, and include {HEAD ~ a release mechanism} responsive to {TAIL ~ booster} thrust termination for releasing the retaining devices 
responsive to
The retaining devices are released on booster thrust termination , and include { HEAD ~ a release mechanism } responsive to { TAIL ~ booster } thrust termination for releasing the retaining devices
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH