Wagtail missile
... that the Wagtail missile, upon being launched, fired retrorockets to allow the carrier aircraft to escape the effects of its own weapon?
... that the <b id="mwFVM"><a href="./Wagtail_(missile)" id="mwFVQ" rel="mw:WikiLink" title="Wagtail (missile)">Wagtail missile</a></b>, upon being launched, fired <a href="./Retrorocket" id="mwFVU" rel="mw:WikiLink" title="Retrorocket">retrorockets</a> to allow the carrier aircraft to escape the effects of its own weapon?