190626-N-MF696-041 WEST BETHESDA, Md. (June 26, 2019) Naval Surface Warfare Center Carderock Division hosted the 15th International Submarine Races (ISR) in its 3,200-foot David Taylor Model Basin in West Bethesda, Md., June 24-28. The biennial science, technology, engineering and math (STEM) event provides an avenue for high school and college teams to tackle the difficult challenges of submarine design, contruction and operation. (U.S. Navy photo by Monica McCoy/Released)