Atonement EAM 23 02 2022 1817 UTC

I'm in unfamiliar territory with Emergency Action Messages and, well, right now they're freaking me out a bit. This was the second one I managed to catch, the first attempt took me by surprise.
Anyway, this one triggered the recording, just as I was settling down for some cheese on toast.
It's the USAF callsign Atonement broadcasting an all stations message - ANSTQPHKX4IADC5DVKWC4PO6F4NWDR - on 11175kHz.
Captured via the University of Twente WebSDR.