Sporting Witness

In 2002, the American football star Pat Tillman became a national hero when he gave up a lucrative career to join the US army and fight in the war on terror. Tillman was a poster boy for the military, but two years later he was killed in a controversial friendly fire incident in Afghanistan. His friend and fellow American footballer, Jeremy Staat, talks to Dina Newman.PHOTO: Pat Tillman in action (Getty Images)