We knew years ago that the DEA has cameras all over the place. They do things like hide them in traffic control devices and read license plates with them. They analyze the traffic to look for drug mules and pass off tips to local police so they can execute parallel construction and hide the real source of the evidence. We all talked about it and, like most big brother shit, no one cared and we all moved on. Glad the kids are rediscovering it.
https://qz.com/1458475/the-dea-and-ice-are-hiding-surveillan...
https://reason.com/2012/07/11/dea-quietly-builds-its-network...