Heres some internet history for the 25th anniversary of 9/11. One of the earliest memes posted online about the attack. Often called "9/11 what if they'd missed" or "9/11 the happy ending."

There's were other versions of it I remember that had the towers bending in multiple directions as other planes attempt to fly into them but they seem to be lost media, aka the Matrix bullet dodging trope.

It was a bit harder to find than I'd assume it'd be. Someone had saved it on youtube and I've converted it to gif for posterities sake. The original was probably in Flash which is why it's so difficult to find these days.