Students line up to throw paper airplanes with a micro-engine on it with 1st Lt. Katherine Branham of the 416th Theatre Engineering Command during the U.S. Army All-American Bowl week Go Army Experience Ten80 STEM workshop Jan. 5, 2018, at Sunset Station in San Antonio, Texas. STEM stands for Science, Technology, Engineering and Mathematics. (U.S. Army photo by Sgt. Ian Valley, 345th Public Affairs Detachment/ Released)