HAY HELP U.S. Air Force Staff Sgts. Troy Martin, right, and Cody Sorenson unload bails of hay to control erosion on about 14,000 acres of farmland near the Mississippi River in Burlington, Iowa, June 18, 2008. Martin and Sorenson are assigned to the Iowa Air National Guard's 185th Services Squadron in Sioux City, Iowa. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 748090-K-QDZ23-560.jpg Photo Gallery