London Prepares for the Olympics

London last hosted the Olympics in 1948 amid austerity in the aftermath of World War II.  Amateur athletes slept on cots and brought their own towels. This year, the Games are a $15 billion spectacle -- ostensibly in peacetime, but protected by warships in the River Thames, missile-launchers on rooftops and 35,000 police and military personnel. We hear how Londoners are preparing, for better or worse.