Comment by repelsteeltje

> Get the schematics

That isn't easy if you're getting devices from consumer market. Requires cooperation of vendor, which might be compromised as well.

> If you are a militia targeted by high profile enemies maybe you should have home/local production

That's it. You might not need to do the actual production, but you need transparency of the supply and full understanding of the device.

Either that, or trust in some third party that does the heavy lifting.