Probably not the right forum (apologize in advance for that) but deserved to be mentioned:
WASHINGTON (Reuters) – Jeremiah Denton, a former U.S. senator who was held as a prisoner of war by North Vietnam for seven years and revealed his treatment by blinking the word "torture" in Morse code in a TV interview, died on Friday, the Washington Post reported.
Denton died at a hospice in Virginia Beach from a heart ailment, his son, Jim Denton, told the newspaper. He was 89.
The retired Navy rear admiral was elected in 1980 as Alabama's first Republican senator in 112 years and earned a reputation as one of the Senate's most conservative members before being defeated in his 1986 re-election bid. President Ronald Reagan lauded him that year as "a national treasure".
Denton was most famous for spending seven years and seven months as a Vietnam War POW after his plane was shot down during a bombing mission from the aircraft carrier USS Independence in 1965. Imprisoned in brutal conditions in and around Hanoi, Denton encouraged fellow American prisoners to resist their North Vietnamese captors.
American POWs were sometimes paraded in propaganda films and in 1966, the captive Denton was interviewed for such a film – it later aired on U.S. television – apparently in the hope that he would denounce the U.S. war policy.
"Well, I don't know what is happening," he told his interviewer. "But, whatever the position of my government is, I support it fully. And whatever the position of my government is, I believe in it – yes, sir. I'm a member of that government and it is my job to support it. And I will as long as I live."
During the interview, he pretended to have light sensitivity that caused him to blink his eyes. What he was actually doing was blinking in Morse Code to spell out "t-o-r-t-u-r-e".
Denton said later his torture increased after the interview was aired. He spent four years in solitary confinement, including two years in a cell the size of a refrigerator. He was 41 when he was captured and 48 when released.
Denton, one of the highest-ranking U.S. officers to become a POW in Vietnam, was a Navy commander at the time of his capture and was promoted to captain while imprisoned.
From: link