White House Cover Up of Pat Tillman's Death Continues

Exactly what does executive privilege cover, besides dirt?

AlterNet: Blogs: PEEK: White House Cover Up of Pat Tillman's Death Continues: "Kathy Kattenburg: The Bush Administration cites 'executive privilege' yet again, this time to justify keeping the official records on Tillman's death from the public. Kathy Kattenburg: The Bush Administration cites 'executive privilege' yet again, this time to justify keeping the official records on Tillman's death from the public. "