They are the unsung heroes of the U.S. economy. Companies with annual revenue between $50 million and $2 billion. They're lithe enough to maneuver, but big enough to have a broad impact. They employ 35 million people--about one in four U.S. workers. They deliver nearly 40 percent of the country's economic vitality. They are America's midsize companies, and it's time they are recognized. READ MORE