The Washington Post has obtained new information in the death of Pat Tillman — the professional football who quit the NFL to fight in Afghanistan. Tillman died just over a year ago in Afghanistan. At the time the Army reported he died after being hit by enemy fire. According to a new Army report — the first Army investigator who looked into Tillman’s death found within days that he was killed by his fellow Army Rangers in an act of “gross negligence.” However Army officials decided not to inform Tillman’s family or the public until weeks after a nationally televised memorial service. Documents obtained by the Washington Post also show that officers destroyed critical evidence and initially concealed the truth from Tillman’s brother who was also an Army Ranger in Afghanistan.