Mass shooting at California bar

Mourners react outside a reception center for families of victims of a mass shooting in Thousand Oaks, California, November 8, 2018. REUTERS/Eric Thayer

A procession for the body of Sergeant Ron Helus, who died in a shooting incident at a Thousand Oaks bar, drives down Ventura HIghway 101 in Thousand Oaks. REUTERS/Mike Blake

The body of Ventura County Sheriff Sgt. Ron Helus, who was shot and killed in a mass shooting at a bar is transferred to a hearse for procession from the Los Robles Medical Center in Thousand Oaks, California. REUTERS/Ringo Chiu

People pray before the procession for the Ventura County Sheriff Sgt. Ron Helus, who was shot and killed in a mass shooting at a bar in Thousand Oaks, California. REUTERS/Ringo Chiu

People comfort each other after a mass shooting at a bar in Thousand Oaks, California. REUTERS/Ringo Chiu

Police and FBI officers wait outside the home of the suspect in a shooting incident at a Thousand Oaks bar, in Newbury Park. REUTERS/Mike Blake

Police guard the site of a mass shooting at a bar in Thousand Oaks. REUTERS/Ringo Chiu

Police guard the site of a mass shooting at a bar in Thousand Oaks. REUTERS/Ringo Chiu

Police officers guard the site of a mass shooting at a bar in Thousand Oaks. REUTERS/Ringo Chiu

People wait in line to donate blood outside LaReina High School after a mass shooting by a lone gunman at a bar in Thousand Oaks, California. REUTERS/Mike Blake

People attend the procession for the Ventura County Sheriff Sgt. Ron Helus, who was shot and killed in a mass shooting at a bar in Thousand Oaks, California. REUTERS/Ringo Chiu

Law enforcement officers salute to the hearse carrying the body of Ventura County Sheriff Sgt. Ron Helus, who was shot and killed in a mass shooting at a bar, in a procession in Thousand Oaks, California. REUTERS/Ringo Chiu

A man holds flowers at the site of a mass shooting at a bar in Thousand Oaks, California. REUTERS/Ringo Chiu

Police guard at the Alex Fiore Thousand Oaks Teen Center where a reunification center has been set up for people that attended the Borderline Bar and Grill where a mass shooting in Thousand Oaks, California. REUTERS/Ringo Chiu

Mourners react outside a reception center for families of victims of a mass shooting in Thousand Oaks, California. REUTERS/Eric Thayer

Flags fly at half-staff at the Washington Monument, with the Capitol in the background, in Washington, after the shooting in Thousand Oaks, California. REUTERS/Mike Theiler

Madison Fuller of Thousand Oaks reacts as she watches from an overpass as a procession for the body of Sergeant Ron Helus, who died in a shooting incident at a Thousand Oaks bar, drives down Ventura Highway 101 in Thousand Oaks. REUTERS/Mike Blake

Police and FBI officers approach the home of the suspect in a shooting incident at a Thousand Oaks bar, in Newbury Park. REUTERS/Mike Blake

People attend the procession for the Ventura County Sheriff Sgt. Ron Helus, who was shot and killed in a mass shooting at a bar in Thousand Oaks, California. REUTERS/Ringo Chiu

Police guard the site of a mass shooting at a bar in Thousand Oaks. REUTERS/Ringo Chiu

Police guard the site of a mass shooting at a bar in Thousand Oaks. REUTERS/Ringo Chiu

An emergency vehicle arrives at the site of a mass shooting at a bar in Thousand Oaks. REUTERS/Ringo Chiu