Joshua Tree National Park Superintendent David Smith and Gilbert Orbeso, father of missing hiker Joseph Orbeso, speak during a press conference at the Maze Loop trailhead on Saturday, Aug. 26, 2017. The trailhead is where officials believe Joseph Orbeso and Rachel Nguyen started out on a hike on July 27, 2017. The couple hasn't been seen since about 6:45 a.m. that day.