Now we know why "Team Heavy Metal" and "Team Rock and Roll" drove their 70 tanks and 60 armored troop carriers 700 miles across the sands and waddies of western Iraq to pop up at the city of Najaf, about 100 miles close to Baghdad. The 3rd Infantry's 2nd Brigade met little or no resistance on the way. There are two reasons for this speed across the sand. First, it puts the brigade in a good position to push into the flank of the Medina division of Republican Guard, and to get to Baghdad pretty quickly after that battle....