Operation Varsity 19-04: Day 2
Yellow smoke disperses into the air during exercise Operation Varsity 19-04 at Ramstein Air Base, Germany, Dec. 10, 2019. The smoke simulated a chemical attack, adding realism to the exercise which was designed to test Airmen’s response to chemical, biological, radiological, nuclear and explosive attacks. (U.S. Air Force photo by Staff Sgt. Devin Boyer)