We have a history of blowing things up around the 4th of July in the comic here: July 6th, 2005, for instance, saw Mrs. Teasdale blowing up her first pheromone factory while July 4th, 2006 had Steven and Jolene sparring while a few semi-explosive bits of information got bandied about. You can check them all by digging through the Archive if you're so inclined.
Next, though, comes the Epilogue Week for both "Burning Down the House," Daily Grind's 42nd storyline, and for The City When it Sleeps, Book VII of Our Heroes' continuing adventures. Don't fail to miss it!
Forty-Two - Burning Down the House