Anderson Cooper 360

Terror Threat Latest: Join the Live Chat

Anderson will be reporting live from the World Trade Center Site with new details on the terror threat that has New York and Washington on alert. Plus, why 10 years after 9/11 first responders in some cities still can't count on fully functioning communications systems – lifesaving systems – if catastrophe strikes.

Scroll down to join the live chat during the program. It's your chance to share your thoughts on tonight's headlines. Keep in mind, you have a better chance of having your comment get past our moderators if you follow our rules.

Here are some of them:

1) Keep it short (we don't have time to read a "book")
2) Don't write in ALL CAPS (there's no need to yell)
3) Use your real name (first name only is fine)
4) No links
5) Watch your language (keep it G-rated; PG at worst - and that includes $#&*)