Jeremiah Denton Jr. used his eyes to blink the word "TORTURE" and send a message using Morse Code during his captivity in Vietnam.
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He was being filmed for propaganda purposes and this video was broadcast around the world. Naval Intelligence was able to decipher his "strange" blinking. He was awarded the Navy Cross, our Nation's 2nd highest military honor for his heroism as a P.O.W.

Public Domain