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Following the 9/11 attacks, many Muslim charities in the U.S. were forced to shut down. But others were able to grow and prosper.
Veteran firefighter and 9/11 first responder Chris Russo says communicating at Ground Zero meant a lot of hand signals and yelling. How much more advanced and resilient is first responder technology today?
Has the shift in funding and disaster preparedness -- away from natural disasters and towards counter-terrorism -- made America less prepared for Mother Nature?
It's estimated that U.S. private businesses have spent at least an extra $10 billion a year on security since 9/11, for even the least expected sort of threats.