Let's guesstimate the microwave to audio efficiency is 10%. The sound is probably less than that from a 10 Watt speaker, so at the ground level you're getting 100 Watts of microwave, the beam is probably diverged to 1m2, I don't see people exploding from the higher energy sunlight hitting them.
That's nothing, they can say and hear, and play tricks on me in public every day and whisper in people's ears what to say about me.
It's some government agency, they claim to be US. If I can just get a semi decent microphone working I'll upload their audio.
Herc