WASHINGTON — Travelers giddy about being able to keep their shoes on while walking through TSA checkpoints at the airport again may have something else to look forward to: changes to how much liquid they can carry.

Homeland Security Secretary Kristi Noem said Wednesday during a conference hosted by “The Hill” that she is questioning “everything TSA does” and spoke of possible changes to the amount of liquids travelers can tote in their carry-on baggage.

“The liquids, I’m questioning. So that may be the next big announcement is what size your liquids need to be,” Noem said. “We have put in place in TSA a multilayered screening process that allows us to change some of how we do security and screening so it’s still as safe.”

She gave no details about precisely what those changes might be or how quickly travelers could expect to see them.

Under the Transportation and Security Administration’s current guidance, travelers can carry liquids in travel-sized containers 3.4 ounces (100 milliliters) or less per item in their carry-on bag. Those containers must be placed in a one-quart resealable plastic bag. Bigger containers must go in checked baggage, though there are exceptions for medications and baby formula.

Noem announced on July 8 that travelers were no longer required to take their shoes off while going through screening after a pilot program showed TSA had the equipment needed to keep airports and aircraft safe while allowing people to keep their shoes on.