Gregory Fletcher, Southwest Research Institute Space, Science, and Engineering Division senior program manager, guides Starbase Kelly summer camp students through a gravity experiment at the Southwest Research Institute in San Antonio, Texas, July 31, 2019. The students, who are attending a camp at Joint Base San Antonio Lackland Air Force Base, Texas, received instruction and demonstrations from experts in the fields of science, technology, engineering and mathematics. (U.S. Air Force photo by Tech. Sgt. Samantha Mathison)