Up, Up, Away!
Staff Sgt. Joshua Thorn, 451st Expeditionary Operations Support Squadron weather observer, releases the twice-daily weather balloon at Kandahar Airfield, Afghanistan, Feb. 14, 2012. The weather balloon measures atmospheric pressure, temperature and humidity and transmits the information back to the weather station using a radiosonde attached to the balloon. (U.S. Air Force photo by Staff Sgt. Heather Skinkle)