There are two suspects accused of being the source of the Anthrax letters. The first is Dr. Philip Zack, who was caught on camera entering the storage area where the Anthrax was kept without proper authorization after being fired from his job for a racially motivated attack on an Egyptian coworker. The second suspect is the more well known Dr. Stephen Hill, accused (and re-accused and re-accused) by Dr. Barbara Rosenberg although no actual evidence of his involvement has surfaced.
Regardless of whether one thinks Dr. Zack or Dr. Hill is the culprit, neither man is an Arab Muslim, which means that the above letters are not evidence of a terrorist attack. They are evidence of an intentional deception against the people of the United States; a deliberate frame-up of middle eastern Arabs for acts of terror committed inside the United States.
ARABS ARE BEING FRAMED FOR TERROR ATTACKS IN THE UNITED STATES!