The Quiet Birdmen is a secretive club in the United States for male aviators. Founded in 1921 by World War I pilots, the organization meets in various locations, never announced to the public. Members, called QBs, must be invited to join, and they join for life. Today, the club's membership, organized into regional "hangars", is made up primarily of retired airline, military and freight pilots, as well as a few astronauts.[1] It is also known as ye Anciente and Secret Order of Quiet Birdmen.[2]