You mean like the AC-130 gunships that have been used all through out this Fallujah engagement?
Fire burns, at left, as an AC-130 Spectre Gunship hits another target during military air attacks on insurgent activity in northwest Fallujah, Iraq, April 28, 2004. AP
AC-130 can put down very accurate fire and take out a single building or, as in the above case, an entire weapons storage area. It is not a B-17 carpet bombing weapon.
In regards to civilians, if civilians insist on staying in a building being used as a bunker by the jihadis, they can collect their Darwin Award at the same time they collect their 72 virgins.
It is not the job of U.S. Marines to die in order to save the lives of civilians too stupid to save themselves with a two mile walk to another part of town.