U.S. Air Force officer and test pilot Chuck Yeager, who was famous for breaking the sound barrier when he tested the X-1 in October 1947, has died at 97. Yeager, who was known as “the fastest man alive,” died on Monday night in a Los Angeles hospital. The pilot had gone through a series of physical health challenges, then suffered a fall that complicated things further due to his old age. The pilot’s second wife, Victoria Yeager, tweeted through her husband’s official Twitter account tweeted the news of his passing, writing, “It is w/ profound sorrow, I must tell you that my life love General …