TUZLA AIR BASE, BOSNIA: An American soldier was shot and wounded in the left shoulder early today by an intruder at a base in the U.S.-controlled sector of northern Bosnia. A spokesman for the NATO-led peace force said Spc. Shawn Austin is in stable condition. Austin was patrolling the base with one other soldier when they saw the intruder and opened fire. "He challenged the intruder, who in turn fired a shot, which hit the soldier in the left shoulder," Lt. Col. Chuck Merlo said. He did not know what kind of weapon the intruder was carrying and would not give the location of the base. Officials are still searching for the intruder, who fled after the shooting.