A paramedic in Texas was arrested for possession of a destructive device (a bomb) this past week. The evidence? The Feds claim he had in his possession (at his home) pipe, a canister of fuses, a lighter, a digital scale and a variety of chemical powders.
None of these items is a bomb, and they will not become a bomb unless assembled into one.
I have in my kitchen some flour, eggs, butter, milk, and sugar. That does not mean that I am in possession of a cake, unless you are the Federal government.