Really? Again? That is what the TSA agent probably thought when finding explosives in a traveler’s carry-on bag. Guys, any form of explosives is not allowed during flights – carry-ons or checked bags.
The “Warning: explosive” is written right on the packing of the firecrackers! By the way, adding the writing “killer” on the cover isn’t helping at all. If you intend to fire those, better buy them at your final destination.