They are American heroes – legendary icons – luminaries who changed the world through monumental innovations and staggering ingenuity. They gave us the airplane and the television, MS-DOS and AC / DC, the V-1, the six-gun, the A-bomb and the IPod. Or at least they take credit for it. Those fabled inventors were not the only ones behind those fabled inventions. No matter how brilliant they were, the challenges they faced were too big to face alone. But who they were seconded by is a surprise.