Investigators successfully smuggled 75 percent of the fake bombs through checkpoints at Los Angeles International Airport, and 60 percent through Chicago's O'Hare International Airport. From late 2005 until last fall was the danger period but conditions have changed since then.
The TSA now conducts daily testing, which has led to improvements at airports, as a response to the bad news.
At San Francisco International Airport, where a private company conducts inspections, 20 percent of the contraband made it through security.
None of this really makes me feel any safer.