Solid. Sniffing is not a very good analogy, but it is an industry term. This has been my opinion from the beginning. But this adds some intel and some firsthand reporting. If they have some active neutron sensors, they are the best. The neutrons will go through any container, the ground or any other material. It looks for backscatter effects. And if you try to use lead, it will come back with a lead signature. Dead giveaway. But I think most of the drones are probably only carrying passive sensors.

Speculation: Scare Event? Deep State?? Thwarted and exposed??