News Wrap: Paralyzing cyberattack traced to North Korea

In our news wrap Tuesday, the U.S. has charged that North Korea was the perpetrator of a widespread cyberattack that affected computer systems worldwide last May. Also, crews continue to work to clear the wreckage of the Amtrak derailment that caused multiple fatalities and left scores injured. The train was going over 50 miles over the speed limit before it careened off the tracks.