Big city Police are part of the problem. Most of them are political hacks.
That’s the mentally-ill pols for ya. Probably was plastique or C4 or something newer.
If wed raid all those filthy mosques, we’d have arsenals,pill pharmacies, and who knows what volume of laundered cash for terrorist ops.
The point is, they could have used any number of things that are easily improvised.
Big city Police are part of the problem. Most of them are political hacks.