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