If you're thinking about carrying your luggage on the plane for the holidays, you may want to make sure you're up to date on the rules.
And these days more travelers are carrying their luggage onto planes.
That will make knowing the rules for bringing liquids and gels aboard more important than ever.
One TSA officer says just remember 3-1-1.
"Three basically is the ounce size of the containers themselves which is 3.4 ounces or less; the one being the one-quart size clear resealable zip-top bag and one also is per passenger.
There are some exceptions to the rules.
Such as regular-sized liquid prescriptions and over-the counter medications like cough syrup, saline solution and petroleum jelly are allowed.