[That all sounds well and good but there's a slight problem with that idea that Hiro comes to immediately even as he watches Howard work.]

Where would we get the balloon? [It's a minimal problem of course but it's enough that he's already thinking of how else things fly. If Lemina were nearby he could ask her to use some of her wind magic, but she's not. He has to think of his own solution.] If we're looking for something with more control...we need something that we can use to aim. Like a cannon. I mean look at this place. We could probably find the parts to make a cannon or something right?

[He may or may not be thinking of turning the magnesium into a sort of bomb. More than likely the answer's yes.]