Apparently, there were four levels of security at the NYPD. Alpha, Beta, Gamma and Omega. Alpha being normal, everyday OK. Gamma being a credible threat of an incident. Omega being an actual incident (i.e., WTC attacks). Omega-plus is "new."

Watching the Al Jazeera tape from Al Qaeda with Osama bin Laden and his fellow fanatic from Egypt. It was pre-recorded before the US attack on Afghanistan. Very chilling.