News of a gunman on the loose spread fast on social media Saturday, causing chaos and fear. Pictures and videos warned people about the threat faster than law enforcement could. Mireya Villarreal reports. Source

“Imagine an avalanche coming down after you.” Big wave surfer Garrett McNamara tells Anderson Cooper what it’s like to ride a giant wave. Source

Here’s a look at the top stories making headlines on the “CBS Weekend News” anchored by Elaine Quijano. Source

David Nakamura, Salena Zito, Sahil Kapur and Shane Harris discuss the administration’s preparations for the arrival of Hurricane Dorian. Source

Investigators say the suspect doesn’t have any terrorist ties Source

Police in France arrested an Afghan man after a deadly knife attack near the city of Lyon on Saturday. Authorities say the suspect fatally stabbed one person and injured nine others. At a news conference Sunday, prosecutors said the attack was not an act of terrorism; instead, they believe the suspect was mentally unstable. Source

Correspondent Anderson Cooper wanted to get a feel for the water as he and his producer profiled surfer Garrett McNamara for this week’s 60 Minutes. The record-breaking waves in Nazare, Portugal aren’t for the average surfer though, so Cooper and McNamara improvised. Source

How do you report on an attack that you can’t see? “60 Minutes” producers say they approached it with skepticism. Source

This week on 60 Minutes, Anderson Cooper visits Nazare, Portugal, home to some of the largest waves in the world. That’s where surfer Garrett McNamara rode a 78-foot swell, a world record at the time. McNamara tells Cooper what the ride was like, Sunday at 7 p.m. ET/PT on CBS. Source

Before big wave surfer GMac, “60 Minutes” profiled another famous name in wave riding —surfboard maker Hobie Alter. Source