Matthew Alexander (a pseudonym) is a twenty year veteran of the Air Force and Air Force Reserves.  He supervised or conducted over 1,300 interrogations in Iraq and led the interrogations that located the Al Qaeda leader Abu Musab al-Zarqawi, who was killed in an airstrike.  Alexander's latest book is Kill or Capture: How a Special Operations Task Force Took Down a Notorious Al Qaeda Terrorist.  He is currently a Fellow at UCLA's Burkle Center for International Relations. 

A former senior interrogator in Iraq says that abusing prisoners results in unreliable information, costs American lives, and it still hasn’t turned up Bin Laden.