[Fai Mao]

“Where in Hell do these people obtain the explosive materials and hardware necessary to construct these devices, “Bombs R Us”?”

An ordinary grocery store
An auto parts store
A hardware store

Bombs are pretty easy to make if you know how and are not interested in really high grade explosives.

[Do the math]

You forgot the dollar store. I hope these savages never studied basic chemistry.

[gigster]

Bombs are pretty easy to make if you know how.... I don't know how to make a bomb and am not the least bit interested in learning how to construct one. However, I am a automative and marine mechanic, pus also an automotive painter by trade, so I've handled explosive and flammable materials for over forty years. I guess I just don't have the morbid curiosity in learning anything about anarchic behavior.