What happened to the bomb?

From the text:

Drops of rain hung suspended before my eyes. And in the middle of the circle of children, like the object of some arcane ritual, there hovered a bomb, its downward-facing tip seemingly balanced on Adam’s outstretched finger.

Then, like a movie that burns in the projector while you’re watching it, a bloom of hot and perfect whiteness spread out before me and swallowed everything.