The booster will be automatically slowed down by the retarding apparatus and separated from the remainder of the missile, thus requiring no pyrotechnic or other devices at {HEAD ~ the booster/missile interface} to produce {TAIL ~ positive separation} 
to produce
The booster will be automatically slowed down by the retarding apparatus and separated from the remainder of the missile , thus requiring no pyrotechnic or other devices at { HEAD ~ the booster / missile interface } to produce { TAIL ~ positive separation }
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