Does UPS and Fed Ex use the same security measures for packages as USPS?

The FBI is on line 1...

ATF on line 2...

They couldn't have been sent by mail. The packaging didn't have enough stamps, and any postal worker worth a damn would have realized that there was something wrong inside. They also could not have been delivered by just one person. It's pretty obvious to anybody who looks at the evidence and thinks about it for more than a second that this is a false flag. The media is already pushing the narrative that they were screened and put through by the postal office. That is a blatant lie. Also, I think it's pretty telling that George Soros was the first person to receive a package. Can't put it past him to set this up, just like he did the Caravan of people coming from the south.