Grand Canyon flash flooding sparks search for missing hikers  BBC15 people may be missing after Grand Canyon flash flood, dozens evacuated  CBC1 dead and about 15 people may be missing as flash flood tears through the Grand Canyon  CNNSignificant Flash Flooding Closes Phantom Ranch and North Kaibab Trail  National Park Service (.gov)Beloved Texas chiropractor, hiking group among those unaccounted for after Grand Canyon flash flood  Fox News