-
Shortwave radio transmissions, right?
-
Walter told me that, uh, he decoded a message.
-
How?
-
Numbers stations are essentially unbreakable.
-
He's studying computer science in college,
-
And he used his computer to help decipher the message.
-
Walter said that the clue
-
led him to a mail boxes, etc, in Rockville,
-
And, um, he saw a man take a secret coded message
-
out of the P.O. Box-
-
A, uh, blue airmail envelope.
-
Could have just been the mail.