'Plot Would Have Killed Thousands'

Terrorists who had planned to detonate gel-based explosives on U.S.-bound flights from London last August would have achieved mass devastation, according to new information from Homeland Security Secretary Michael Chertoff in an exclusive interview with ABC News.

"I think that the plot, in terms of its intent, was looking at devastation on a scale that would have rivaled 9/11," Chertoff told ABC's Pierre Thomas. "If they had succeeded in bringing liquid explosives on seven or eight aircraft, there could have been thousands of lives lost and an enormous economic impact with devastating consequences for international air travel."

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