In the tumultuous times in which we live, a terrorist threat can take many forms. In recent years, the possibility of a biological threat being introduced through the mail has become a grim reality. Terrorists can attempt to use letters or packages to spread infectious materials, which are introduced to the body through contact with the skin and/or inhalation. Yet, Nevadans are not defenseless against this threat; by taking some time to familiarize yourself with a few simple guidelines about how to recognize and deal with suspicious packages and letters you can significantly reduce your vulnerability to these possible attacks.