U.S. construction equipment producer and diesel engine manufacturer Caterpillar Inc. today announced first-quarter results and better prospects for sales and profits in 2010. We are affirming our ratings on Caterpillar, including the 'A' long-term corporate credit rating, and revising the outlook to stable from negative. The stable outlook reflects our expectation that a more favorable economic environment and continued conservative financial policy will allow Caterpillar to improve credit measures in the near-term. On April 26, 2010, Standard&Poor's Ratings Services revised the outlook on Peoria, Ill.-based construction equipment producer and diesel engine manufacturer Caterpillar Inc. and its wholly owned finance subsidiary, Caterpillar Financial Services Corp., to stable from negative. At the same time, we affirmed the 'A' long-term corporate