Some civilians have a very caviler attitude about artillery shells. Many years ago i and some G.I. buddies were visiting the museum in Bastogne. ON a back window sill, there were several artillery shells with the fuze unscrewed but the yellow TNT filling was still intact. They were using the shells for Ash Trays. We rapidly left.

P.S. I spent 3 years in the US army combat engineers as a demo man. i then went into the USAF and spent 5 years at the nuclear weapons lab at kirtland AFB, then went into EOD for 20 years. I personally have worked on everything from a 22 short to a Mk 41 3 stage Thermo-nuclear bomb.

Not just civvies, but even some ex servicemen as well. I remember a story in upstate some joker from WWII brought some 2 75mm shells from a Sherman Tank. He had them in his basement, in a open area as a display piece for almost 50 years until one day...BOOM! The world's population of idiots decreased by one.