bends, never cowers, never stands down. endures, responds, and always overcomes. for we are americans. and never, never underestimate us. it's always been a bad, bad bet to do that. >> the gunman died in the attack in a shoot-out with police. it was anything but normal on the eastern satisfy -- sea board. at least 640 flights were canceled. the glitch has been fixed but thousands of travelers were left stranded at airports. thousands of protesters are expected to flood into the streets of brazil within hours.