Browse Items (1 total) Tags: 20th Army Air Corps Browse All Browse by Tag Search Items Sort by: Title Creator Date Added Photo of Warren L. "Bud" Ferriell, a B-17 Radio Operator, in Siappan, Iwo Jima WWII - Warren L. "Bud" Ferriell, B-17 Radio Operator, 20th Army Air Corps. Siappan, Iwo Jima 1944. Tags: 20th Army Air Corps, B-17 Bomber, B17 Radio Operator, Decatur IL., World War II, WWII Featured Item Decatur Public Library Board of Trustees Meeting on January 15, 2009. Board of Trustees Decatur Public Library, Meeting on January 15, 2009.