Students from Baker Middle School in Fairborn, Ohio, learn about and use a scanning electron microscope, or SEM, as part of the Scanning Electron Microscope Educators, or SEMEDS, program at Wright-Patterson Air Force Base, Dayton, Ohio. The after-school program gives area middle and high school students a rare opportunity to experience firsthand what it's like to use a $500,000 SEM to explore a wide-variety of unique and everyday specimens. The program was recently revived after a hiatus due to the COVID-19 pandemic. (U.S. Air Force photo / Terrance Auster)