First flight of Britain's <a href="https://en.wikipedia.org/wiki/Handley_Page_Victor" id="mwARI" rel="mw:WikiLink" title="Handley Page Victor">Handley Page Victor</a> <a href="https://en.wikipedia.org/wiki/Strategic_bomber" id="mwARM" rel="mw:WikiLink" title="Strategic bomber">strategic bomber</a>.