We build it? (Gosh, Hiro, Howard thought you were an inventor, here. The only problem he foresees is getting it in the air, but he's already been thinking about what they can use, and how to put it together. But if he has any other bright ideas, he's all for those, too. No matter what they opt for, they're probably going to have to build it.

Howard pauses his work and looks up at him, considering.) Yeah? Probably. We just need to make sure that it doesn't blow back at us since the powder is so light. Either on our person, or this place. I'd hate to set it on fire.

(Turn everything into a bomb. It's the Howard Stark way.)