Don't be ridiculous.
The only thing "massive" about the Bush Administration's response to the Saudi-Pakistan attack on 9/11 was it's utter strategic and tactical incompetence.
The failure to identify the enemy, the choice of a sideshow battlefield, the adoption of Vietnam war tactics and metrics, the failure to kill and destroy until the survivors begged for mercy, the failure to install an American administration over former Wahabi/Deobandist territory - all these gross derelictions have given rise to a much more complex strategic environment, including the ascension of ISIS and "Obama".
"Bush-style" = defeat.
We no longer vanquish our enemies. Until we start to do so again we will never win another war. A battle victory here and there is the best our current fighting style can achieve.
OK. Got me there.
What I meant was a ground invasion. Or do you think we could do it with selective bombing?