Anons, mailfag here (I mail thousands of packages week).
You cannot mail a package over 13 ounces with stamps by dropping it in a box. You have to mail it IN PERSON. They will RETURN IT to you if you do.
So these were all mailed IN PERSON.
As bad as they are packaged, I guarantee you a Postal Service person would REMEMBER these. No doubt at all.
It's almost as if the perpetrators were given BAD ADVICE so they would be caught. Wait, what?
This is starting to look like an FBI Sting to me. See the Notable list item called Bomb Incident Theories.
This is an FBI sting.
TRUST WRAY.
This could be OUR October Surprise.