A search is intensifying for a 26-year-old man who disappeared in Grand Canyon National Park. The National Park Service has identified the missing man as Sandarsh Krishna. His last location is believed to be along the Rim Trail between Bright Angel Lodge and Mohave Point. The search has expanded across the rugged terrain, using ground teams, rope operations, drones and aerial reconnaissance. There is no precise location where Krishna may have gone missing, leading authorities to methodically comb large sections of the canyon.