Just so you know what is being "threatened" - from the background article:
The public bus that Davis took to her office job in Lakewood, Colorado, crosses the Denver Federal Center, a 90-building complex occupied by agencies such as the U.S. Geological Survey, the Interior Department, the General Services Administration, and the Bureau of Land Management. "The facility is not high security," says Davis. "It's not Area 51 or NORAD or the Rocky Mountain Arsenal."Somehow, this does not strike me as being a high-priority target for terrorists. I don't see why it should be subject to any greater security than Brookfield Zoo.
was the WTC high security??