[Okay, yeah, he's smug. He's showing off his creation to dad (not technically dad, but it still counts) and this might be the only time he manages to impress the man, so he's going to take the opportunity while he has it. Lord knows it won't last.]

Actually it's mostly a gold compound with some additional shielding. The circuitry is built in and the control... Well, that's more complex.

[He's not ready to explain Extremis. But that doesn't mean he can't give Howard a brief summary.]

We do. More so now than ever. It turns out we're kind of behind on advancements compared to everyone else. But we have our moments.