As terrorists attacked the United States on September 11, 2001, Pat Tillman sat transfixed in front of the television.The attacks occurred on a Tuesday, and Tillman was in the Arizona Cardinals’ media room. Tillman didn’t say much. He just watched footage of terrorists flying two planes into the World Trade Center in New York and another one into the Pentagon in Washington, D.C. (A fourth plane crashed near Shanksville, Pennsylvania, after passe…