About Jack Keane
John M. "Jack" Keane is an American political commentator and retired general who served as the 29th vice chief of staff of the United States Army from 1999 to 2003. He was also the acting chief of staff of the Army in 2003. He is a national security analyst, primarily on Fox News, chairman of the Institute for the Study of War, and chairman of AM General.
Biography source:
Wikipedia