Things like metal detectors and explosive screeners can lose efficacy over time.

If implemented, the new rule would represent a marked expansion of the system as it currently exists.

The agency is also increasing its focus on insider threats and training a division of inspectors focused on pipeline security and cybersecurity.

It will be the second "short-term" project the Transportation Security Administration has initiated using facial recognition to verify the identity of travelers.

The goal is to find techniques to automatically classify the contents of a passenger’s bag in such a way “that can support future algorithm development for explosives and/or prohibited item threats.”

For airline passengers entering the U.S. this holiday season, U.S. Customs and Border Protection is using some new tools to streamline immigration security.