Note that fireworks are illegal in Massachusetts without a permit and certification, so you know there was some unsafe shit already happening in that house.
No they're making a joke about the TSA saying they caught a woman the other day with 71 fireworks in her luggage. Turns out it was an open box of black cats. Yes they're illegal, yes she was wrong, But the image they release to the press had them laid out like a cocaine trafficking bust, when the actual fireworks in question were slightly more than glorified bang snaps.