Obama will wear bullet-resistant clothing, speak behind a protective glass shield and ride in the parade in the armored Cadillac limousine, with doors and windows so thick that he probably would survive a bomb blast, law enforcement officials said.
Trailing his car will be black vans loaded with Special Weapons and Tactics and counter-assault teams, high-speed communications equipment and electronic devices capable of jamming the detonators for homemade bombs.
Nondescript boxes that can detect the airborne releases of chemical or biological weapons such as lethal anthrax spores will be scattered among the crowds.
Wiley said that Secret Service agents had surveyed every building along the cordoned-off parade route, which like the Capitol grounds will be limited to ticket holders. Snipers will be positioned on rooftops and balconies along Pennsylvania Avenue, their eyes joining surveillance cameras in scanning to ensure that every window is closed and no one threatens the new president.