posted on Mar, 20 2014 @ 04:07 PM
4725 was active moments ago, then signed off with "This is Mainsail, out."
I captured this: CLICK
Apparently it's the US Air Force (?)
edit on 20-3-2014 by schweizer because: to add image
Edit to add:
There are two excellent write-ups on these messages: Yes, they are from the US Air Force, and they are broadcast 24/7/365. Sometimes it's exercises,
and other times it's a genuine message known as an EAM or Emergency Action Message. Further reading here:
and here: www.udxf.nl...
skip specifically to page 3.
The broadcasts that I'm hearing follow the pattern described on page 3 of said PDF. But it remains to be seen if the broadcasts are tests or the real
edit on 20-3-2014 by schweizer because: (no reason given)