Especially considering that both EM radiation and sonic energy are very easy to detect, and EM at least is something I’m pretty sure they go around embassies trying to detect, so not being able to detect it should rule it out.
Especially considering that both EM radiation and sonic energy are very easy to detect, and EM at least is something I’m pretty sure they go around embassies trying to detect, so not being able to detect it should rule it out.