Maj. Mark DeRocchi, deputy commander of the Alaska District, and a few other Corps employees visited with students of Mount Spurr, Ursa Major and Ursa Minor Elementary schools during the week of Nov.18-22 to encourage their studies in science, technology, engineering and mathematics, also known as STEM. Students learned about the U.S. Army Corps of Engineers, the roles of its different divisions and the Corps’ contribution to their community. Using toothpicks and marshmallows, the children got to build their own bridge and test its strength using toy cars with a time limit of 10 minutes.