NPR's Andy Bowers reports the commander of US forces in Kosovo says unidentified assailants opened fire today on US Marines in the southeastern part of the province. The Marines, who were manning a checkpoint, returned fire, killing at least one of the gunmen. According to Army Brigadier General John Craddock, the marines then surrounded the surviving assailants, who were armed with AK-47 rifles, forcing them to surrender. Craddock says it was the second attack on US forces since NATO troops went into Kosovo last week. None of the Marines were injured in the incident.