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New airport scanners are better at spotting liquid explosives, but many airports lack them

UNITED STATES, JUL 19 – Only 255 of 432 U.S. airports have advanced CT scanners for 3D liquid explosive detection, prompting TSA to reconsider long-standing liquid restrictions to improve security and passenger flow.

  • New CT scanners that use computed tomography to better detect liquid explosives are installed in 255 of the 432 U.S. airports as of this spring.
  • The expanded use of these scanners builds on liquid restrictions put in place following a 2006 foiled plot in the United Kingdom, where conspirators planned to use homemade explosives concealed in sports drink bottles to damage commercial aircraft.
  • These new scanners produce sharper three-dimensional images but require larger machines, checkpoint redesigns, and sometimes floor reinforcements, so many airports still use older technology.
  • Secretary Kristi Noem recently suggested easing the 3.4-ounce liquid limit, calling it a potential new era for TSA policies, while experts urge caution until more systems are deployed.
  • Although past TSA reports have highlighted some detection weaknesses, screeners like Jones stress that in the agency’s 22-year history, no aircraft has been compromised or prevented from completing its flight due to overlooked threats, reflecting the continued strength of layered security measures.
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Travelers welcomed the prospect that U.S. airports will soon ease restrictions on liquids in carry-on luggage—a constant annoyance at security checkpoints—but more than a third of the country's airports have yet to upgrade their screening systems to reliably identify liquid explosives that could bring down a plane.

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9NEWS Denver broke the news in Denver, United States on Friday, July 18, 2025.
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