Students from Will Rogers Elementary School, Burns Flat, Okla., wave to a U.S. Air Force KC-135 stratotanker refueling aircraft as it takes to the skies above during a Science, Technology, Engineering, and Math fair, at Club Altus, Feb. 5, 2015‬. The students were on base as part of a STEM Fair in which they got see first-hand how the Airmen at Altus use science, technology, engineering and math in their daily mission. (U.S. Air Force photo by Airman 1st Class Megan E. Acs/Released)