190806-N-LY160-0157 SAN DIEGO (Aug. 6, 2019) A students operates a sound-powered telephone during the National Naval Officers’ Association Science, Technology, Engineering and Math (STEM) event aboard the amphibious assault ship USS America (LHA 6) in San Diego, Aug. 6, 2019. The STEM event exposed local middle school and high school students to Navy technology as well as interactive coding and robotics presentations from local partners. (U.S. Navy photo by Mass Communication Specialist 2nd Class Michael H. Lee/Released)