The blue-and-white theme on "The Baikal" continues to its corridors. The provinitsas keep the water boiling at the end of each corridor, the carpets vacuumed and the windows locked. Though everyone requests, at one time or another, that the windows be opened usually towards the end of the journey when smells are getting ripe, the attendants are loathe to open them. In part, this is for the sake of security and guarding against unauthorized entry and theft. However, it is to preserve the unholy air-conditioning that wafts down the corridors and through the compartments, except in stations when it shuts off. This is when passengers most loudly request that the windows be opened, in addition to the photographers on board who always want at least one to be open.