I'm not sure if it will start all at once. I DO know, however, (from actual pictures in The Orange Book) that all children who fidgeted at the Kingdom Hall and pinched their little brother making him cry out disturbing the entire congregation will be swallowed up by a humongous crack that will open up in the ground. This will be just the start of Armageddon.
Haaaa! OMG! You remember that 50's type propoganda spread too! To think, its takes a sick mind to draw such.
"As a thief in the night".
NT - Rev has "fire" as the source of destruction but the WTS has always shown pictures of people being sucked up by earthquakes. Kinda like a Sodom and Gomorrah type deal but world-wide.