I would like to let our military folks here address this point.
Does the US military have a weapon which could punch a hole thru three buildings then come to rest?
Lol,
"We're hanging our hopes on might."
So if it does exist then they used it? Lame
You claim to do all this research and yet you still have holes. How many feet hole to hole I ask you? Still no answer with a year's worth of research.
What is a missile desgined to do? Explode right? Destroy and blow a target to bits? Why send it through a building and instead send it down and say that the plane hit down and destroyed more?
A bunker buster does this.
Bunker Busters are designed to go through a wall (of an underground bunker) and when they reach the other wall they detonate killing everyone inside.