TEXT: Gov. Doug Ducey, left, helps unveil a new sign marking the 100th birthday of the Grand Canyon during a ceremony in Wesley Bolin Memorial Plaza at the Capitol in Phoenix, February 27, 2019. From left to right are,  John Halikowski, Arizona Department of Transportation director; Robert  Broscheid, executive director of Arizona State Parks and Trails; Debbie Johnson, director of the Arizona Office of Tourism.