ETD involves a screener using a dry pad on the end of a wand to wipe a surface baggage, christian louboutin louboutin shoes, clothing and then putting the pad into a machine called an ion mobility spectrometer The machine can detect tiny parti-cles, or traces, of explosives. Screeners do use ETD on passengers who have been selected to be screened a second time after going through the checkpoint. TSA chief Kip Hawley recently acknowledged that the threat from liquid explosives is not going away and new security measures designed to thwart the threat may be around for awhile. The agency is testing equipment to detect liquid explosives at six airports, Hawley said,christian louboutin, and he called the technology "very promising". But, he said, "with a million and a half to 2 million passengers every day, it is not practical to think that we are going to take every bottle and scan it through these liquid scanners". "We are not going to wait for the perfect device to be deployable," Hawley said in an interview Friday "We're going to look for a total system to be at the level to make us comfortable". The agency wants to make better Christian Loubtin use of a limited resource airport screeners, whose numbers have been capped by Congress at 45,000 The TSA handles security for 450 commercial airports. Have screeners check IDs and boarding passes, instead of contract employees hired by airlines. Expand a program that trains screeners to look for unusual behavior in passengers that might indicate malicious intent Called SPOT Screening Passengers by Observation Technique it is used at least 12 airports, Howe said. Those changes may require approval by Congress and agreement with airports and the airline industry, which might have to bear some of the cost, Howe said. The airlines might go along with the plan, an industry spokesman said. "We favor this proposal provided it doesn't add costs to the carriers," said David Castelveter, louboutin pumps spokesman for the Air Transport Association. 相关的主题文章： Gayle Williams of Consumer Reports of Christian Louboutin discusses reviews of r Christian Loubtin have not been upgraded to detect explosive To help close this gap, the percentage of shoes su