Master Sgt. Eric Grim, South Dakota Air and Space Museum curator, speaks to eighth-grade students from Pierre Middle School at the SDASM in Box Elder, S.D., April 23, 2013 during a career day field trip. Throughout the day, more than 200 students visited various locations including area businesses, upper level education facilities and the SDASM. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)