Radiation Fears Spread as Efforts to Cool Reactors in Japan Fail

Military and police forces have used water-dropping helicopters and water canons in a desperate effort to cool down the spent fuel rods now exposed to the air at Japan's Fukushima Daiichi nuclear power complex. American and Japanese officials have different assessments of how much radiation is spewing into the air from Japan's damaged reactors. Both the Pentagon and the Nuclear Regulatory Commission are sending experts into the area.