Col Bill Nelson, a physician and Air Force Research Laboratory’s 711th Human Performance Wing vice commander, works on a problem with Col. Stana Ilcus, a physician and Air Education and Training Command chief of aerospace medicine at the Roadmap Evaluation Physiological Episodes Action Team hackathon, Dec. 18, 2018, at Navy Support Facility Arlington in Arlington, Va. (U.S. Air Force photo by Maj. Christi Opresko)