I honestly just couldn't help asking this after seeing the caliconnect raid.
As a vendor, we never use post offices everything goes out at a post box.
If your a large scale vendor needing to ship with tracking why not GET other people to post your packages at post offices? Just the part of a vendor allowing himself to be RECORDED on CCTV posting out drugs is beyond my understanding.
They've even got hidden motion detection cameras outside of post offices in colorado so they can still get your plates & face throwing it in the box, likely to do with weed being legalized and lots of ppl exporting to other states.
http://kdvr.com/2015/03/11/mysterious-spy-cameras-collecting-data-at-post-offices/