As we learn more about Maj. Nidal Malik Hasan, it’s clear that he was throwing off warning signals right and left — but nobody wanted to step up and take action about him until it was too late: Hasan’s Supervisor Warned Army In 2007.

Two years ago, a top psychiatrist at Walter Reed Army Medical Center was so concerned about what he saw as Nidal Hasan’s incompetence and reckless behavior that he put those concerns in writing. NPR has obtained a copy of the memo, the first evaluation that has surfaced from Hasan’s file.

Officials at Walter Reed sent that memo to Fort Hood this year when Hasan was transferred there.

Nevertheless, commanders still assigned Hasan — accused of killing 13 people in a mass shooting at Fort Hood on Nov. 5 — to work with some of the Army’s most troubled and vulnerable soldiers.

On May 17, 2007, Hasan’s supervisor at Walter Reed sent the memo to the Walter Reed credentials committee. It reads, “Memorandum for: Credentials Committee. Subject: CPT Nidal Hasan.” More than a page long, the document warns that: “The Faculty has serious concerns about CPT Hasan’s professionalism and work ethic. … He demonstrates a pattern of poor judgment and a lack of professionalism.” It is signed by the chief of psychiatric residents at Walter Reed, Maj. Scott Moran.

When shown the memo, two leading psychiatrists said it was so damning, it might have sunk Hasan’s career if he had applied for a job outside the Army.