Purely History on Instagram: "In 1965, U.S. Navy pilot Jeremiah Denton was shot down over North Vietnam and taken prisoner. The following year, his captors forced him into a televised interview where he was instructed to declare that he was being treated well. While doing so, Denton deliberately blinked in Morse code, spelling the word “TORTURE.” This small but powerful act provided the first concrete proof to American intelligence that prisoners of war were suffering abuse in captivity. It was