National Park Service search and rescue crews are looking for a missing Kentucky man at the South Rim of the Grand Canyon. Authorities say 40-year-old John Pennington was last known to be near Yaki Point. Pennington left his vehicle at the point on or around February 23rd and is believed to be traveling alone. Currently, Pennington may be traveling on a yellow 2005 Suzuki GSX-R600 motorcycle with Ohio plates. He is described as a white male, five-feet-11 inches tall and 165 pounds with hazel eyes and brown hair. Rangers are asking anyone who may have seen or talked to Pennington, or have seen the motorcycle, to call or text the NPS Investigative Service Branch Tip Line at 888-653-0009 or submit a tip at nps.gov/isb.