Eighth-grade Earth science student Blayne Smith does a show-and-tell of his ball python, Killer, as Army Sgt. Jacob D. Wilson, U.S. Army Operational Test Command's command group noncommissioned officer in charge, left, and Army Master Sgt. Earnest L. Vance, OTC's Test Technology Directorate NCOIC, listen to Smith's presentation as Monica L. Mitchell, 8th-grade Earth Science teacher, observes at right during an OTC Adopt-A-School visit to Florence Middle School, Texas, Sept. 9, 2016. Army photo by Michael Novogradac