Patrick Herlihy, an Aircraft Mechanic Student and part of the B24 flight crew, based out of Addison, TX. works on the exhaust stack on the B-24 engine. Thousands of people attended the 185th Air Refueling Wing Air And Ag. Expo. at the Sioux Gateway Airport/Col. Bud Day in Sioux City, Iowa, on Saturday, August 01, 2009. U.S. Air Force Photograph, Released.
