(or greater) Wide-spread internet-enabled command and control, plus long term surreptitious reconnaissance, coupled together with machine learning to maximize

(or greater) Wide-spread internet-enabled command and control, plus long term surreptitious reconnaissance, coupled together with machine learning to maximize impact, and I'll hazard a guess that such a scenario can reach beyond the destruction of 4 full airplanes and 3 inhabited large buildings, in ways too uncomfortable to contemplate.