U.S. President Barack Obama speaks during a town hall discussion with workers of Gamesa Technology Corporation in Fairless Hills, Pennsylvania USA on April 6, 2011 about building a 21st century clean energy economy to win the future. Gamesa's Fairless Hills wind-energy turbine manufacturing facility employs approximately 300 workers and was built at a former U.S. Steel industrial site..Copyright EML/Rockinexposures.com.