I raise you the world almost ending several times.
First, actual launch orders for nuclear weapons that weren't carried out. [0][1]
Bassett immediately ordered the other launch officer, as Bordne remembers it, “to send two airmen over with weapons and shoot the [lieutenant] if he tries to launch without [either] verbal authorization from the ‘senior officer in the field’ or the upgrade to DEFCON 1 by Missile Operations Center.” [1]
Followed by a myriad of false alarms on both sides too numerous to exhaustively list. [2][3][4]
First, actual launch orders for nuclear weapons that weren't carried out. [0][1]
Bassett immediately ordered the other launch officer, as Bordne remembers it, “to send two airmen over with weapons and shoot the [lieutenant] if he tries to launch without [either] verbal authorization from the ‘senior officer in the field’ or the upgrade to DEFCON 1 by Missile Operations Center.” [1]
Followed by a myriad of false alarms on both sides too numerous to exhaustively list. [2][3][4]
[0] https://en.wikipedia.org/wiki/Vasili_Arkhipov
[1] http://thebulletin.org/okinawa-missiles-october8826
[2] https://en.wikipedia.org/wiki/1983_Soviet_nuclear_false_alar...
[3] http://nsarchive.gwu.edu/nukevault/ebb371/
[4] http://nuclearfiles.org/menu/key-issues/nuclear-weapons/issu...