President Obama looks at two Arizona students' robot at the fifth annual White House Science Fair

President Barack Obama talks with Sergio Corral and Isela Martinez while viewing science exhibits during the 2015 White House Science Fair celebrating student winners of a broad range of science, technology, engineering, and math (STEM) competitions, in the State Dining Room, March 23, 2015. The two 17-year-old students are current leaders of the robotics program from Carl Hayden High School in Phoenix, Ariz., which was chronicled in the recent documentary "Underwater Dreams" where their under-served high school beat out MIT and other colleges in an underwater robotics competition.