EFPs–explosively formed projectiles–are a form of lethal IED that has been used with increasing frequency in Iraq over the past 18 months or so. They have killed an estimated 170 US personnel. Their construction and design point to Iranian involvment with the insurgents in Iraq. In an interview from Baghdad with Fox & Friends, Lt Gen Raymond Odierno talks about the recent discovery of weapons caches, including EFP components, and discusses the success of the force surge so far.