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I want to applaud ProPublica for their ongoing series on the risks of X-ray body scanners, including a look at the political process of awarding the contracts. Even though officials deny the pressure had any effect on their decision to remove them from major airports, I think it's obvious it did -- for which we can all be grateful:
The Transportation Security Administration has been quietly removing its X-ray body scanners from major airports over the last few weeks and replacing them with machines that radiation experts believe are safer.
The TSA says it made the decision not because of safety concerns but to speed up checkpoints at busier airports. It means, though, that far fewer passengers will be exposed to radiation because the X-ray scanners are being moved to smaller airports.
The backscatters, as the X-ray scanners are known, were swapped out at Boston Logan International Airport in early October. Similar replacements have occurred at Los Angeles International Airport, Chicago O'Hare, Orlando and John F. Kennedy in New York, the TSA confirmed Thursday.
The X-ray scanners have faced a barrage of criticism since the TSA began rolling them out nationwide after the failed underwear bombing on Christmas Day 2009. One reason is that they emit a small dose of ionizing radiation, which at higher levels has been linked to cancer.
In addition, privacy advocates decried that the machines produce images, albeit heavily blurred, of passengers' naked bodies. Each image must be reviewed by a TSA officer, slowing security lines.The replacement machines, known as millimeter-wave scanners, rely on low-energy radio waves similar to those used in cell phones. The machines detect potential threats automatically and quickly using a computer program. They display a generic cartoon image of a person's body, mitigating privacy concerns.
"They're not all being replaced," TSA spokesman David Castelveter said. "It's being done strategically. We are replacing some of the older equipment and taking them to smaller airports. That will be done over a period of time."
He said the TSA decided to move the X-ray machines to less-busy airports after conducting an analysis of processing time and staffing requirements at the airports where the scanners are installed.The radiation risk and privacy concerns had no bearing on the decision, Castelveter said.
Asked about the changes, John Terrill, a spokesman for Rapiscan — which makes the X-ray scanners — wrote in an email, "No comment on this."
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