U.S. Air Force Airman Christian Padilla, 312th Training Squadron Special Instruments Training course student, observes an electrical resonant transformer circuit, more commonly known as a TESLA coil, during a scientific demonstration, in the Louis F. Garland Department of Defense Fire Academy on Goodfellow Air Force Base, Texas, Aug. 19, 2020. The SPINSTRA course lasted 85 training days and taught electronic principles, applied sciences, computer and network fundamentals, phenomenology, and Intelligence, Surveillance, and Reconnaissance fundamentals in a 10:1 student to instructor classroom ratio. (U.S. Air Force photo by Senior Airman Abbey Rieves)