Wednesday night was college night at Borderline, with the restaurant filled with young people, including some from nearby California Lutheran University and from Pepperdine University in Malibu.
President Trump tweeted on Thursday morning to say he been briefed on the shooting, describing it as "terrible", and praising the bravery of the police officers involved. "My friend is the DJ so she cut off the music, we just heard a lot of mayhem".
"I think everyone was in so much of a shock that it was sheer panic", Whittler said.
In yet another odd coincidence, one of the victims to be named in the Vegas shooting was Susan Smith from Simi Valley which is only miles from the site of the Borderline shooting.
Chandler Gunn, 23, of Newberry Park called a friend who works at the bar who was also at the Route 91 shooting in Vegas. When Mayorga heard it was Helus who died, and that it happened when Helus rushed inside to try to save someone, he was shocked, devastated and not surprised.
Dean says around 10 other people were shot and wounded.
"He was shooting everything from the speakers to anything", she said. "It was like 50 people trying to get up and run out the back door all at once".
Tayler Whitler, 19, said she was dancing when the gunman opened fire. The shooter was found dead inside, authorities said. "I knew something was wrong straight away".More news: Kemp Denounces White Nationalist's 'Vile' Robocalls Targeting Abrams
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'There's a shooter in there!' Police officials stated that Long had first shot a security guard and employees of Borderline, and then turned his gun on the dancers.
At least one person was being treated for a gunshot wound, while more than a dozen others suffered minor injuries after jumping out of windows and diving under tables during the attack. Police said he killed himself.
"There was probably three or four", one young man told local television station KABC.
"He didn't say anything at all".
Some social media accounts said a bearded man wearing a dark trenchcoat walked in and started shooting.
"I should have stayed until he changed his clip, but I was anxious about my boy - but I should have stayed".
"It was a huge panic, everyone got up, I was trampled, I was kind of left on the floor until some guy came behind me and grabbed me and dragged me out".
Dean said in the news conference that some people who tried to escape the chaos by breaking windows might have been injured.