Anyone capable of building and sending ten bombs is capable of building 20 and using ten for testing. If none of those mailed explode, that means something. If the packages have excessive postage, misspelled names, and the other amateurish signs that all scream “BOMB”, only the #FakeNews media could miss the point. Apparently, even journalists cannot continue the charade as long as one might have expected.
Those things make me suspect this was a prank... that the prankster now deeply regrets.
If that would be the case, and he has any sense, he’s already lawyered up.