BIG GUNS, NOT HIGH TECH, BEHIND BAGHDAD COLLAPSE

The technologies behind U.S. troops' victories in the open expanses of the Mesopotamian deserts aren't what's triggering the fall of Saddam's rule in the alleys and shadows of Baghdad.
GPS-guided bombs, advanced radios and spy drones all become less reliable as sand gives way to concrete and steel. Instead, the American military has leaned on the cunning of its junior officers and the overwhelming firepower of its heavy armor in its battle for the Iraqi capital.
This is proving to be a powerful combination for U.S. forces, as recent events have shown. But it's most definitely a shift from the war's first phase.
Jim Lewis, an analyst with the Center for Strategic and International Studies, said, "Urban combat means training becomes important, and technology becomes secondary."
My Wired News story has more.