A C-130J Super Hercules sits on the flightline as it is prepared for a vapor purge experiment at Little Rock Air Force Base, Ark., July 24, 2020. Chemical, biological, radiological, and nuclear analysts from the 711th Human Performance Wing at Wright-Patterson Air Force Base, Ohio, conducted an experiment that looked to determine how long it takes for a chemical contaminant, such as tear gas, to purge itself from an aircraft as well as potential best practices to reduce the amount of chemical particles in the air in the most efficient way possible. (U.S. Air Force photo by Airman 1st Class Jayden Ford)