Korean Airlines Flight 007 is shot down in Soviet air space after the pilots had put the flight on autopilot and gone incommunicado. The Soviets were to blame, but the incident happened after Americans had, over the preceding two years, persistently tested Soviet defences with unnecessary near-incursions.
September 26, 1983
October 5, 1986
Sandinista forces in Nicaragua shoot down a plane carrying three Americans who are transporting supplies to the American-backed Contras. The sole survivor admits to working for the CIA, and the incident exposes a large, clandestine international network that has been illegally funding the war in Nicaragua. Various members of the Reagan administration are implicated in what will be known as the Iran-Contra scandal. Some are convicted of crimes. The scandal debases the magical appeal of Reagan's "morning in America" but the president and vice president emerge unscathed.
 Barack Obama, “Breaking the War Mentality,” Sundial, March 10, 1983.
[6 ] Session of the Politburo of the CC CPSU, October 14, 1986,
 “28th of February--Day of anti-nuclear movement ‘Nevada-Semipalatinsk,’" Kazinform International News Agency, February 28, 2013, http://www.inform.kz/eng/article/2538774