Wednesday marks three days to go until the opening ceremony of the London Olympics . London will become the first city to host the Olympics three times in the modern era . Venues are on schedule and within reach ; tickets sales have been strong . Add in the regular strikes by underground workers that cripple the network -- another of which was called on Monday -- and the potential for chaos only increases . London 's public transport system and security are two of the major issues remaining .
Wednesday marks three days to go until the opening ceremony of the London Olympics . London will become the first city to host the Olympics three times in the modern era . Venues are on schedule and within reach ; tickets sales have been strong . London 's public transport system and security are two of the major issues remaining .