Still seems too controversal to me. It's way too oriented to real life violence anytime, not just the 9/11 attacks. Like really, gasoline causing large explosions, and injuring someone? Many people die from this kind of stuff!
It can't really be in this episode. Why? It teaches kids how to start fires (and eventually commit arson). It's violent, and many things nowadays are trying to go with less violence. It's occuring to a "loveable character". However, for those who have advanced with age, and don't burn ants with magnifying glass', then yes I think I may sign this.