A piece of equipment reads the amount of chemical particles

A piece of equipment reads the amount of chemical particles that are in the air inside of a C-130J Super Hercules at Little Rock Air Force Base, Arkansas, July 23, 2020. Chemical, Biological, Radiological, and Nuclear analysts from the 711th Human Performance Wing at Wright-Patterson Air Force Base, Ohio recently visited the 19th Airlift Wing to conduct the first vapor purge test on a cargo plane as part of a series of tests they have and will continue to conduct on aircraft across the Department of Defense. (U.S. Air Force photo by Airman 1st Class Jayden Ford)