Homeland Security Secretary Tom Ridge said the high alert will probably be lowered fairly soon.
Ridge also defends the Bush administration's decision to raise the threat level, even though some information that led to the decision turned out to be fabricated.
Ridge will present a "Ready Campaign" Wednesday encouraging the public to have a communication plan with their family, to prepare an emergency supply kit and to "stay alert on a day-to-day basis."
Officials said the government has 40 people in the U.S. who have trained in al-Qaida camps under a watchful eye.
Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or firstname.lastname@example.org.