New questions uncovered in Tillman's death

CNN has pieced together new details -- and new discrepancies -- about the death of former NFL star Cpl. Pat Tillman. Thousands of Army documents reveal what three official inquiries have been unable to resolve about the friendly fire killing on a dusty ridge in Afghanistan two years ago. A soldier with Tillman as he lay dying said: "I could hear the pain in his voice as he called out: 'Cease fire! Friendlies!"