Staff Sgt. Charles Rideout, 386th EMDG bioenvironmental engineering technician, utilizes a chemical identifier to analyze unknown substances at an undisclosed location in Southwest Asia, Feb. 18, 2019. The device is used to compare the results of infrared spectroscopy to known Chemical Warfare Agents, toxic industrial chemicals, drugs and explosives. (U.S. Air Force photo by Staff Sgt. Arielle Vasquez)