Oh, the police panic was justified -- in neither recent case was the original collector around, to say whether the grenades were disarmed. And some explosives become much more unstable with age.

It's just a different age. People take fewer risks. You can't buy sulfur, saltpeter, and powdered charcoal at the local drugstore . . .

(Or ammonium nitrate fertilizer at the local hardware or garden store, either.)