In 1950, the CIA suffered its first loss of an operative in the line of duty- Doug Mackiernan was shot to death by a border patrol while he made his way from China into Tibet. RIP, Doug. #CIA #Espionage #History https://t.co/LvLjBtkd1E pic.twitter.com/86mycS4e2e
— Robert Morton (@Robert4787) April 8, 2024
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