can be black-listed. some terrifying moments aboard an air canada flight from shanghai to toronto, diverting the flight to calgary. the boeing 777 hit turbulence so severe that 21 passengers were hospitalized. and at least one person went flying through the cabin. authorities say the injuries are not life-threatening. i don't like that. >> particularly scary on those long flights. you're asleep. you're not paying attention. >> and you come from shanghai. you're not really that far from your destination. they say they hit turbulence. everybody was like, oh, wow, that's heavy turbulence, and then it got bad. 33 minutes after the hour. a taser in every police cruiser. that is just part of chicago mayor rahm emanuel's overhaul of his embattled police department. this is an effort to rebuild trust after a series of governor-involved shootings. but does it go far enough. we'll discuss, next. i asked my dentist if an electric toothbrush