STEM Smiles A child learns about water survival training from airmen volunteering at a science, technology, engineering and mathematics festival at Little Rock Air Force Base, Ark., Oct. 26, 2018. SHARE: Download: Full Size (2.64 MB) Tags: STEM, science, Guard, Air Force Credit: Airman 1st Class Kristine M. Gruwell VIRIN: 181026-F-ID976-1160C.JPG Photo Gallery