More Pat Tillman death coverup details

Keeping the truth hidden about what really happened to this American hero is one of Bob Gates' first orders of business:

One of the four shooters, Staff Sgt. Trevor Alders, had recently had PRK laser eye surgery. Although he could see two sets of hands "straight up," his vision was "hazy," he said. In the absence of "friendly identifying signals," he assumed Tillman and an allied Afghan who also was killed were enemy.

Another, Spc. Steve Elliott, said he was "excited" by the sight of rifles, muzzle flashes and "shapes." A third, Spc. Stephen Ashpole, said he saw two figures, and just aimed where everyone else was shooting.

Squad leader Sgt. Greg Baker had 20-20 eyesight, but claimed he had "tunnel vision." Amid the chaos and pumping adrenaline, Baker said he hammered what he thought was the enemy but was actually the allied Afghan fighter next to Tillman who was trying to give the Americans cover: "I zoned in on him because I could see the AK-47. I focused only on him."

All four failed to identify their targets before firing, a direct violation of the fire discipline techniques drilled into every soldier.

There's more.