CNN This Hour With Berman and Michaela February 20, 2014 16:37:00
Severity. you don't know what plane it could be on. you're heightening up security levels. if you didn't do it and god forbid something did happen, there would obviously be criticism and chance to of avoided what the effort is out there. you know what the story really is, what's old is new again. richard reed, the shoe bomber, the threat from england where they tried to use the liquid bombs. again, it's the hydro general peroxide bombs. >> has it advanced since 2009? what have we learned since then? >> there are so many agencies like the homeland security advanced projects agency. what happens...
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