"Cold War international tensions rose to a peak in 1983, with the deployment of Cruise and Pershing missiles in Western Europe exciting Soviet concern and anger, and the Soviets fearing attack under the cover of Able Archer, a NATO military exercise held from 2 to 11 November. Reagan going aloft in his command plane during the exercise worried the Soviets. Moreover, the unrepentant Soviet shooting down on 1 September 1983, over Soviet airspace, of Korean Airlines flight 007, suspected of espionage, increased tension. Two hundred and sixty-nine people, including an American congressman, were on the plane."
January 1, 1970
https://en.wikiquote.org/wiki/Korean_Air_Lines_Flight_007