Ricky Darren, an employee with the U.S. Forest Service's Coronado National Forest, straightens a sign Thursday that was put up at the entrance to Carr Canyon. The Forest Service found it necessary to inform visitors to the area of the potential problems that might be encountered in the area. (By Ed Honda-Herald/Review) SIERRA VISTA — The first of a number of signs warning people that certain areas of U.S. Forest Service land are routes for smuggling and illegal immigrants went up Thursday in Carr Canyon. Bill Wilcox, fire manager of Coronado National Forest’s Sierra Vista Ranger District, said the...