A Once in a Lifetime Kid - The Pat Tillman Story. Listen to BBC Radio 5 live from 2030 BST on Thursday.
In these days when money often seems to be the main motivating force in professional sport and loyalty is in short supply, it's rare to come across a story like that of Pat Tillman. But then Pat Tillman was no ordinary sports star.
This is a man who turned his back on a multi-million dollar contract in one of the richest sports in the world to serve his country - and paid the ultimate price.
I travelled to Tillman's home city, San Jose in Southern California, to meet members of his family, friends and close colleagues, and came away with one regret - that I never had the chance to meet the man himself.