Also that pointy thing in the last bag should be in a crushproof container. Officer safety, people! (Again, sorry...)

The only way I could ease my OCD about it was to assume the package (which is just a ziploc bag and not a real evidence bag) had been heat sealed underneath the evidence tape.

Thank you! Thank you, thank you, thank you! Even if a person couldn't figure out that was an explosion (science is harrrd!) , shouldn't they be smart enough to think, "When was the last time I ever saw a cloud that looked like that? That can't be right," and do an image search?