Chuck Yeager was an American test pilot and military officer, best known for being the first person to break the sound barrier. On October 14, 1947, he flew the Bell X-1 aircraft, named "Glamorous Glennis," and reached a speed of Mach 1.06, marking a significant milestone in aviation history. Born on February 13, 1923, in Myra, West Virginia, Yeager served as a fighter pilot during World War II. He later became a prominent figure in the U.S. Air Force, contributing to various test flights and advancements in aeronautics until his retirement in 1975.