Fighting Continues in Nasiriya, Nicknamed 'Ambush Alley'Marines of Task Force Tarawa fighting today in the southern Iraqi city of Nasiriya. By MICHAEL WILSON MASIRIYA, Iraq, March 24 — Fighting continued today in and around what the marines have nicknamed "Ambush Alley," with Iraqi guerrillas jumping out of buses, pickups and taxis to join the battle. Heavy small-arms fire kept up as sundown approached on the second day of fighting in the city, key to American advances north because of its two bridges across the Euphrates. A second tank unit made it into Nasiriya, along with ammunition, food, fuel and water...