Severe flash flooding in Grand Canyon National Park, triggered by monsoon storms, stranded approximately 200 hikers and led to the evacuation of over 100 people, including tourists and Havasupai tribal members. The Arizona National Guard, activated by Governor Katie Hobbs, utilized a UH-60 Blackhawk helicopter for rescue operations, successfully evacuating 104 individuals from the affected area. Tragically, 33-year-old hiker Chenoa Nickerson was swept away in the flood and remains missing, with ongoing search efforts. The Havasupai Tribe has closed access to their village and campground due to extensive damage and unsafe conditions. Rescue teams reported challenges as the flooding rendered many trails impassable, and assessments of damages are underway. The National Park Service urges anyone with information about Nickerson to come forward as her family continues to hope for her safe return.