ADVANCE FOR USE SUNDAY, FEB. 17 AND THEREAFTER - In this June 20, 2012 photo, Caterpillar tractors are seen for sale in Clinton, Ill. Experts looking at Illinois' job market say the best prospects for 2013 are likely in medical and manufacturing firms. Manufacturing was once the heart of Midwestern economies but, even with decades of Rust Belt exodus, companies that make things in Illinois like heavy machinery have been a relatively steady job provider in an uneven recovery. (AP Photo/Seth Perlman)
