Milton William Cooper (May 6, 1943 – November 5, 2001), usually known as Bill Cooper, was an American writer, shortwave broadcaster, and political activist. Cooper became a popular speaker on the UFO lecture circuit, and expanded his account into the book Behold a Pale Horse. Cooper is perhaps best known for this 1991 book which details much of his research into Government Corruption, Secret Societies and UFO Phenomenon. The title is from the Bible, Revelation 6:8: "And I looked, and behold a pale horse: and his name that sat on him was Death, and Hell followed with him."