The Aviation Security Service must, at every international screening point, screen and, if necessary, undertake reasonable searches for liquids, aerosols, and gels, including (but not limited to)—
(a) water and other drinks, soups, syrups, jams, stews, sauces, and pastes (including toothpaste); and
For the purposes of this direction, international screening point means a passenger inspection and screening station that is used for screening and searching people and items that enter a sterile area that services international flights (including transit flights).