Travelers who approach the TSA travel document checking podium do not have to show their boarding pass because the CAT unit verifies that the traveler is ticketed to travel out of the airport for a flight that day. Even with TSA’s use of CAT, travelers still need to check-in with their airline in advance and bring their boarding pass to their gate agent to show the airline representative before boarding their flight.
After passing through the travel document checking podium, travelers will then approach the new state-of-the-art advanced technology computed tomography (CT) scanner that provides 3-D imaging that provides critical explosives detection capabilities for screening carry-on items.
“Our officers’ use of CT technology substantially improves our threat detection capability at the checkpoint,” Murgia said. “Previously, our screening technology for carry-on bags used 2-D images. The CT technology applies advanced algorithms for the detection of explosives, including liquid explosives and other threat items.”
The system applies sophisticated algorithms for the detection of explosives by creating a 3-D image that can be viewed and rotated 360 degrees on three axes for thorough visual image analysis by a TSA officer. This new technology creates such a clear image of a bag’s contents that the system can automatically detect explosives, including liquids, by shooting hundred of images with an X-ray camera spinning around the conveyor belt to provide TSA officers with the three-dimensional views of the contents of a carry-on bag. It takes a few extra seconds for the TSA officer to view the image and rotate it to get a better understanding of its contents, however in most instances, rotating the image allows the TSA officer to identify an item inside the bag and clear it without a need to open it for inspection. Checkpoint CT technology should result in fewer bag checks. However, if a bag requires further screening, a transportation security officer will inspect it to ensure that a threat item is not contained inside.
CT units have a slightly smaller entry tunnel and not all larger carry-on bags will fit into the units. TSA recommends that large carry-on items be checked with the airline.
The CT unit also represents a passenger convenience because passengers using these machines at Hagerstown will be permitted to leave their laptops and other electronic devices in their carry-on bags.
