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NASA kicks off air quality study at Osan

Marc Knapper, U.S. Embassy Seoul deputy chief of mission, and Col. Andrew Hansen, 51st Fighter Wing commander, step on board the NASA DC-8 that is part of the Korea United States-Air Quality (KORUS-AQ) Experiment at Osan Air Base, Republic of Korea, April 29, 2016. KORUS-AQ is a step toward an international effort to develop a global air quality observation system that will include satellites from both countries and a network of surface monitoring sites, models, and airborne sampling.(U.S. Air Force photo by Staff Sgt. Jonathan Steffen/Released)

PHOTO BY: Staff Sgt. Jonathan Steffen
VIRIN: 160429-F-UI176-175.JPG
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