On 2008-11-07, John Doe wrote:
Me wrote:

No. the restriction is against "liquids" both in the U.S. and other
countries.


So a can filled with "air" (air from city X, as a tourist gimmick) would
be OK to bring on the plane, but a standard 7-up or sprite depending on
your religion would not be OK.

I've had an empty bottle of clear plastic confiscated in security.