Lt. Col. Matthew Russel, 85th Test and Evaluation Squadron Director of Operations, conducts an eye-tracking assessment to collect data for human performance testing at Eglin Air Force Base, Florida, August 8, 2024. The testing focused on analyzing the effects of long duration flights on aircrew performance, gathering real-time data directly from pilots before, during and after flight. (U.S. Air Force photo by 1st Lt. Rebecca Abordo)