 In the aftermath of September 11, 2001, Sheriff Deen provided security for a visit by U.S. President George W. Bush to Barksdale Air Force Base, from which Bush addressed the nation on the terrorist threat.Deen's department, along with some one hundred other patrol cars, barricaded entry to Barksdale to protect Bush from threat that did not materialize.The Bush visit and the terrorist threat subsequently propelled Deen to launch the program "Operation Exodus", which is designed to preserve vital resources in event of a catastrophe.