Iraqi Armored Force Falls to U.S. Advance By CHRIS TOMLINSON .c The Associated Press NEAR NAJAF, Iraq (AP) - The alert crackled over the radio at midmorning Sunday: An armored column of more than 30 Iraqi vehicles was coming, and a company of the 3rd Infantry Division was ordered forward to dig in behind irrigation levees. Peering into the distance, the soldiers could barely make out the Iraqi vehicles. They seemed little more than blips on the horizon. Then the U.S. Air Force arrived. Slow-flying A-10 Thunderbolt attack planes swooped down and began picking off the Iraqi vehicles one by...