The gunman who killed 12 people today at Ft. Hood appears, based on current media reports, to be Army psychiatrist Nidal Hasan who was listed as a participant in a Homeland Security Policy Institute's presidential transition task force last year.
The task force was not officially affiliated with the White House. It was a project of the Homeland Security Policy Institute, an independent thinktank housed at George Washington University, aimed at drafting policy recommendations for the incoming Obama administration.

According to the task force's May 2009 report [pdf], a "Nidal Hasan" from the Uniformed Services University School of Medicine was a task force event participant. Other participants included Senate and House staffers, Department of Homeland Security officials, Defense Department officials, and reporters for Politico, the Washington Post, and the London Times....