U.S. citizens must always possess a valid U.S. passport and appropriate visas for travel to or transit through Russia, whether by train, car, ship or airplane. The visas should be obtained from a Russian Embassy or Consulate in the U.S. or abroad in advance of travel, as it is impossible to obtain a Russian entry visa upon arrival. Travelers who arrive without an entry visa are not permitted to enter Russia and face immediate expulsion by route of entry, at the traveler’s expense. On the next episode of The Amazing Race: Spoiler [size=+2]Are You Good at Puzzles?[/size] The teams travel to the Sphinx in Cairo, Egypt. At the mercy of a foreign cab driver, Linda & Karen have trouble communicating where they need to go and miss a very critical flight. Can they catch up? Stuck with a pack of Teams waiting for a flight, cousins Charla & Mirna make a stealthy move away in the middle of the night. Trying to complete a task, one Team is hopelessly lost amongst the great pyramids on the Giza Plateau when they run into a rival Team. Will the rival Team bury the hatchet and help the lost duo, or leave them behind to lose? Teams are forced to face their fears of dark, cramped spaces as they must descend the ancient shaft to a watery tomb.