On March 10, 2012, my friend Bonnie and I hiked along Cienega Creek, which is located southeast of Tucson, AZ. The trailhead, at Davidson Canyon, is dedicated to Gabe Zimmerman, an aide to U. S. Congressperson Gabriel Giffords. He was one of six people who were killed during a public meeting that Giffords held. See http://www.pima.gov/nrpr/parks/cienega_creek/index.htm for more information about Cienega Creek.