TSA: X-Raying Shoes Is Reliable

Government Denies Report That X-Rays Fail To Detect Weapons, Explosives

(CBS/AP)  The U.S. government sought to assure airline travelers that X-raying shoes at security checkpoints was a reliable way of detecting improvised bombs, a claim contradicted by a Department of Homeland Security study.

"Screening shoes by X-ray is an effective method of identifying any type of anomaly, including explosives," Transportation Security Administration chief Kip Hawley said at a news conference Tuesday at Reagan National Airport just outside Washington.

A study by the Homeland Security Department, obtained by The Associated Press, states that X-ray images "do not provide the information necessary to effect detection of explosives."

Under new orders this week, all airline passengers must put their shoes through X-ray machines before boarding their flights.

There was mixed reaction to the mandatory order at Boston's Logan Airport Monday.

"If it means that people feel more secure, there's a way to have safety be priority, then I'll take my shoes off," one woman passenger told Kim Tunnicliffe of CBS Radio station WBZ.

"It's just inconvenient. It's just one more example of being inconvenienced by this whole war on terror," said another.

A scientist who has studied the issue said the truth lies somewhere between the study's findings that X-ray machines cannot detect bombs and Hawley's assertion that they can.

Richard Lanza, senior research scientist at the Massachusetts Institute of Technology, said the X-ray image does not identify what a gel or a liquid is made of. But, Lanza said, screeners can "look at the image and connect regions that look the same in density and shape."

It is not a foolproof method, but it is often effective, he said.

"Nothing is 100 percent," Lanza said. "But if the bad guys think you have a good shot at discovering it, they'll do something different."

Hawley said that 31,000 screeners have been specially trained to see if a shoe has been tampered with when they look at its X-ray image.

"It does take the human brain to make the interpretation on X-ray, but it is, frankly, not the most difficult thing we have to do to find potential shoe bombs," Hawley said.

He displayed copies of X-ray images of two pairs of shoes — one with no explosive device and one worn by Richard Reid, who was arrested aboard a trans-Atlantic flight in 2001 when he tried to ignite a bomb in his shoe.

"You can see very clearly the difference between a shoe with an explosive and one without," Hawley said.

But the Homeland Security Department said in its April 2005 report that the ability of screeners to detect improvised explosive devices "is not a matter of proper training, reinforcement or motivation." The report is titled "Systems Engineering Study of Civil Aviation Security — Phase I."

The report cited studies that show a person who has made or carried a bomb is likely to have traces of explosives residue on his hand. The report recommended that screeners use a technology called explosives trace detection, or ETD, on the shoes and hands of passengers who arouse suspicion or are randomly chosen for more screening.

ETD is commonly used at airports by TSA screeners, who use a dry pad on the end of a wand to wipe a surface — baggage, shoes, clothing. They then put the pad into an ion mobility spectrometer that can detect traces of explosives.

The TSA's new screening procedures were ordered after British police last week broke up a terrorist plot to assemble and detonate bombs aboard as many as 10 trans-Atlantic flights from Britain.

Airline passengers can no longer carry liquids and gels into airline passenger cabins. Their carry-on luggage is searched by hand more, and they are subject to random double screening at boarding gates.

On Sunday, the TSA made it mandatory for shoes to be run through X-ray machines as passengers go through metal detectors. The checks were begun in late 2001, after Reid's arrest, and have been optional for several years.

[powerplantop]

This just shows how big a joke the TSA is.

This is a bunch of hot air to make the once a year flyer feel safe while they sit on top of unscreened cargo. The reason for all shoes going thru the Xray is they were getting to many complaints about screeners not following TSA guidelines. TSA screeners would often misquote the old regulations.

[donachaeire]

Fact V Fiction V Spin V Reality
X ray Machines have never been proffered as capable of detecting liquid explosive / slurry. They merely show the elements that they can detect,so why the bru ha ha ?.
They are outdated but the question is who is going to bear the cost of replacing them with CAT scan technology together with an integrated sniffer that will also detect explosive liquids / slurry without giving off false alarms that renders air transport inoperable.
If my memory serves me right explosive trace detection equipment on passengers bodies is too fickle. It alarms out for instance if presented with the rubbings from a "rich armpit" ? and thereafter the system has to be purged for the next sample to be tested ?.
Given that, against the volumes of passengers this too will break the back of air transit and other systems.
Unless real money is invested in furthering these technologies and bringing them on line,unless real money is invested into the training of staff who will be provided with a professional realistic level of wage reflecting their heavy responsibility.There is not a realistic prospect of the industry grasping this particular nettle. I.E.
Profit "V" Realistic expectations of dividends by investors, "V" the Safety of their customers/ passengers lives "V" the Governmental burden of contributing taxpayers money to make air transit and other transit systems safe its not exactly an easy animal to control is it ?.
Regards

[fortleegal]

We check people, we check luggage, but until we check each and every item in cargo going on commercial airlines, we will never be safer.

I would also like to know how thorough they check the background of the mechanics and caterers that service the planes. LN