Senior Airman Rachel Cole, left, 779th Physiological Training Flight aerospace and operational physiologist, tries to point at a test board held by Senior Airman Erika Luke, 779 PTF aerospace and operational physiologist, after being spun around in a Barany Chair by Staff Sgt. J.R. Pace, 779 PTF human performance training NCO in charge. The Barany Chair is used to conduct air sickness simulation sessions for pilots, aircrew, loadmasters and flight engineers three days per week. (U.S. Air Force photo/ Bobby Jones)