WASHINGTON - The U.S. Air Force said Thursday it was setting up what could become a new four-star command to fight in cyberspace, where officials say the United States has already come under attack from China, among others. "The aim is to develop a major command that stands alongside Air Force Space Command and Air Combat Command as the provider of forces that the president, combatant commanders and the American people can rely on for preserving the freedom of access and commerce, in air, space and now cyberspace," Air Force Secretary Michael Wynne told an industry conference. Barksdale Air Force...