GALVESTON, Texas (Oct. 18, 2012) - Before entering the building, engineers Franchelle Craft and Eduardo Irigoyen turn their cell phone ringers off. They make their way to the front desk, sign in as visitors and wait to be escorted to a classroom where they will spend the next two hours interacting with middle school students enrolled in science, technology, engineering and mathematics (STEM) courses as volunteers of the U.S. Army Corps of Engineers Galveston District’s “Corps in the Classroom” program.