Red Hebe
... that the Vickers Red Hebe air-to-air missile was dismissed by the British Air Ministry's own Operational Requirements branch as "still in the piston era" compared to the US Sparrow?
... that the <a href="./Vickers" id="mwsw" rel="mw:WikiLink" title="Vickers">Vickers</a> <b id="mwtA"><a href="./Red_Hebe" id="mwtQ" rel="mw:WikiLink" title="Red Hebe">Red Hebe</a></b> <a href="./Air-to-air_missile" id="mwtg" rel="mw:WikiLink" title="Air-to-air missile">air-to-air missile</a> was dismissed by the British <a href="./Air_Ministry" id="mwtw" rel="mw:WikiLink" title="Air Ministry">Air Ministry</a>'s own Operational Requirements branch as "still in the piston era" compared to the US <a href="./AIM-7_Sparrow" id="mwuA" rel="mw:WikiLink" title="AIM-7 Sparrow">Sparrow</a>?