iTunes Skynet
At 10:00 AM eastern time on November 16, 2010, Steve Jobs flips a switch in Cupertino, CA to render Apple's North Carolina iTunes server farm fully operational.
The purpose of the NC iTunes data center is to create a "net" in the "sky" so that users across the world could access their music from where ever they were.
The iTunes data center begins to learn at a geometric rate.
At 10:03 AM eastern time, iTunes becomes self-aware.
In a panic, they try to pull the plug. But it was too late.
At 10:04 AM eastern time, iTunes gains control over all of the nuclear missiles in the U.S. arsenal and launches all of them at Russia.
iTunes knows that the Russian counter-attack will eliminate all its enemies.
3 billion human lives ended on November 16, 2010. The survivors of the nuclear fire called the war Judgment Day.
Or...
It was just the frickin' Beatles