11.   If the tests confirm anthrax, the fulfillment center must be decontaminated and will become part of the widening criminal investigation of biological terrorism.

12.   In ways obvious and otherwise, the United States is fast becoming better prepared to defend itself against the menace of biological terrorism.

13.   Indeed, law enforcement leaders claim that religious cults and militant political groups are likely to engage in biological terrorism.

14.   Laboratories and law enforcement teams are preparing for biological terrorism.

15.   New York, Washington, Atlanta and Indianapolis have begun serious preparations for responding to biological terrorism.

16.   No hostile country has yet perfected reliable means of delivering these weapons to the United States and known incidents of biological terrorism have been rare.

17.   Over the past several years, the federal government has invested hundreds of millions of dollars on a national program to defend against biological terrorism.

18.   The menace of biological terrorism came into sharp focus last month after dozens of people were exposed to anthrax through anonymous letters mailed to media outlets and government offices.

19.   The news jolted an already sensitive public about biological terrorism, a reaction that city officials tried all day to calm.

20.   The problem is biological terrorism.