Lisa Geist, chief of the Environmental Engineering Section at the U.S. Army Corps of Engineers – Alaska District, explains the concepts of tension and compression using a pool noodle during a National Engineers Week event on Feb. 23 at Pacific Northern Academy in Anchorage. The district representatives provided students with a hands-on learning experience that involved constructing a bridge from toothpicks and marshmallows to inspire the next generation of engineers. (U.S. Army photo by Rachel Napolitan)