Brig. Gen. Edward L. Vaughan, the Air Force Unexplained Physiological Events Integration Team lead, listens to George Miller, Principal Research engineer with the 711th Human Performance Wing, as he discusses the On- Board Oxygen Generation Systems (OBOGS) laboratory and the research his team is accomplishing during a tour Aug. 27 at Wright-Patterson Air Force Base. Also pictured are Jennie Farrell, chief engineer for the Human Systems Division of the Agile Combat Support Directorate of Air Force Life Cycle Management Systems; and Kevin Kemper, chief engineer of Flight Trainers in the Mobility and Training Systems Directorate of AFLCMC. (U.S. Air Force photo by Richard Eldridge)