Where is Bradley?

 FYI... apparently these blocks trap heat.  Bradley was up building with Charles after the other kids had gone to bed, and Bradley wanted his brothers to see the rocket when they woke up.  So Charles took the top apart so he could lift Bradley out.  When he did that there was a whoosh of hot air and poor Bradley was sweating.  I'm surprised he didn't pass out!  On the bright side, at least we know we have the supplies to make our own sauna.