In the past few weeks, three people in the United States have died of anthrax and Americans are worried that they may pick up a dangerous infection when they pick up the mail. Health officials have been taken by surprise by the ability of anthrax spores to spread from a single envelope in the mail stream. They say the war against terrorism on the home front may prove as lengthy as the one being waged on a battlefield half a world away.
Today's Dateline examines "Homeland Insecurity."