By Tim Steller ARIZONA DAILY STAR EJIDO LOPEZ MATEOS, Sonora - National Park Service Ranger Kris Eggle was rushing toward a gunman hidden in bushes, just north of the Mexican border, when a burst of gunfire from the bushes cut him down, witnesses and officials said. A few minutes later, the gunman moved several yards from his hiding place and was spotted by Mexican officers, who unleashed a barrage of gunfire from the south side of the border, witnesses said. The gunman died right away, and Eggle died soon after, before an emergency helicopter arrived. American officials said Saturday...