Diffusion Inhibitor
... that the world's first fusion reactor was called the Diffusion Inhibitor so managers at NACA would not know what it was?
... that the world's first <a href="./Fusion_power" id="mwAkI" rel="mw:WikiLink" title="Fusion power">fusion</a> reactor was called the <b id="mwAkM"><a href="./Diffusion_Inhibitor" id="mwAkQ" rel="mw:WikiLink" title="Diffusion Inhibitor">Diffusion Inhibitor</a></b> so managers at <a href="./National_Advisory_Committee_for_Aeronautics" id="mwAkU" rel="mw:WikiLink" title="National Advisory Committee for Aeronautics">NACA</a> would not know what it was?