Test run?
OPINION-SPECULATION: I think some of the recent events around the country in the last two weeks or so is testing.
Just watched "United 93" tonight. Recommend it highly. If ever there were a compelling reason for our government to drop it's PC behavior reasoning and institute profiling, this should have done it. Screening articles instead of passengers just doesn't cut it and failure to profile leaves the airlines and passengers as vulnerable today as they were on 9/11 IMHO.