Nation’s deadliest mass shooting stuns Las Vegas — PHOTOS

Las Vegas local Bryan Houghton holds the American flag while a crowd gathers for a candlelight vigil ceremony near East Sahara Avenue and South Las Vegas Boulevard that honors the victims of the shooting that occurred Oct. 1 in Las Vegas, Monday, Oct. 2, 2017. Gabriella Benavidez Las Vegas Review-Journal @latina_ish

U.S. Rep. Ruben Kihuen, D-Nev., left, and Clark County Commissioner Steve Sisolak following a press conference on the mass shooting, at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Clark County Sheriff Joe Lombardo discusses the mass shooting during a press conference at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Clark County Sheriff Joe Lombardo discusses the mass shooting during a press conference at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Clark County Sheriff Joe Lombardo discusses the mass shooting during a press conference at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Gov. Brian Sandoval pauses as he discusses the mass shooting during a press conference at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Gov. Brian Sandoval, center, with other state dignitaries, discusses the mass shooting during a press conference at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Gov. Brian Sandoval, center, with other state dignitaries, discusses the mass shooting during a press conference at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Gov. Brian Sandoval, left, and Clark County County Sheriff Joe Lombardo during a press conference on the mass shooting, at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Nevada Attorney General Adam Laxalt discusses the mass shooting during a press conference at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Las Vegas Mayor Carolyn Goodman discusses the mass shooting during a press conference at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Las Vegas Mayor Carolyn Goodman discusses the mass shooting during a press conference at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Las Vegas Mayor Carolyn Goodman, from left, Nevada Attorney General Adam Laxalt, and U.S. Rep. Dina Titus, D-Nev., during a press conference on the mass shooting, at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

U.S. Rep. Ruben Kihuen, D-Nev., discusses the mass shooting during a press conference at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Aaron C. Rouse, special agent in charge for the FBI in Nevada, discusses the mass shooting during a press conference at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal

Dannah Lamb, left, at a candlelight vigil ceremony near East Sahara Avenue and South Las Vegas Boulevard that honored the victims of the mass shooting that occurred Oct. 1 in Las Vegas, Monday, Oct. 2, 2017. Gabriella Benavidez Las Vegas Review-Journal @latina_ish

Noelani Epps, left, and Savanah Gales at a candlelight vigil on Monday, Oct. 2, 2017, near East Sahara Avenue and South Las Vegas Boulevard that honored the victims of Sunday's deadly mass shooting in Las Vegas. Gabriella Benavidez Las Vegas Review-Journal @latina_ish

Candles lit for the victims of the shooting that occurred Oct. 1, near East Sahara Avenue and South Las Vegas Boulevard in Las Vegas, Monday, Oct. 2, 2017. Gabriella Benavidez Las Vegas Review-Journal @latina_ish

Noelani Epps signs a poster with words of encouragement before a candlelight vigil ceremony near East Sahara Avenue and South Las Vegas Boulevard that honors the victims of the shooting that occurred Oct. 1 in Las Vegas, Monday, Oct. 2, 2017. Gabriella Benavidez Las Vegas Review-Journal @latina_ish

Missy Reinheimer hugs Ian Balido tightly before a candlelight vigil ceremony near East Sahara Avenue and South Las Vegas Boulevard that honors the victims of the shooting that occurred Oct. 1 in Las Vegas, Monday, Oct. 2, 2017. Gabriella Benavidez Las Vegas Review-Journal @latina_ish

Participants take part in a candlelight vigil condemning the mass shooting at Route 91 Harvest country music festival on Monday, Oct. 2, 2017, at the intersection Las Vegas Boulevard South and West Sunset Road. Richard Brian Las Vegas Review-Journal @vegasphotograph mass shooting

Participants take part in a candlelight vigil condemning the mass shooting at Route 91 Harvest country music festival on Monday, Oct. 2, 2017, at the intersection Las Vegas Boulevard South and West Sunset Road. Richard Brian Las Vegas Review-Journal @vegasphotograph mass shooting

Kelly Lopez, middle, leads a prayer session during a vigil for the shooting victims on Monday, October 2, 2017, at the Student Union courtyard, at UNLV. Benjamin Hager/Las Vegas Review-Journal @benjaminhphoto

Vigil attendees lock arms in prayer on Monday, October 2, 2017, at the Student Union courtyard, at UNLV, in Las Vegas. Benjamin Hager/Las Vegas Review-Journal @benjaminhphoto

Diego Saravia leads a prayer session during a vigil for the shooting victims of the Route 91 country music festival on Monday, October 2, 2017, at the Student Union courtyard, at UNLV, in Las Vegas. A gunman in a Mandalay Bay hotel room shot into a crowd of thousands at the outdoor country music concert late Sunday, killing at least 59 people and injuring more than 525. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto

Antonio Ruedas, left, and Katherine Thomas hold signs during a vigil for the shooting victims of the Route 91 country music festival on Monday, October 2, 2017, at the Student Union courtyard, at UNLV, in Las Vegas. A gunman in a Mandalay Bay hotel room shot into a crowd of thousands at the outdoor country music concert late Sunday, killing at least 59 people and injuring more than 525. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto

Jessica Brady, left, hugs Daniel Cordova during a vigil for the shooting victims of the Route 91 country music festival on Monday, October 2, 2017, at the Student Union courtyard, at UNLV, in Las Vegas. A gunman in a Mandalay Bay hotel room shot into a crowd of thousands at the outdoor country music concert late Sunday, killing at least 59 people and injuring more than 525. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto

Attendees of a vigil for Sunday's shooting victims share a moment of silence on Monday, October 2, 2017, at the Student Union courtyard, at UNLV, in Las Vegas. A gunman in a Mandalay Bay hotel room shot into a crowd of thousands at the outdoor country music concert late Sunday, killing at least 59 people and injuring more than 525. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto

Participants take part in a candlelight vigil condemning the mass shooting at Route 91 Harvest country music festival on Monday, Oct. 2, 2017, at the intersection Las Vegas Boulevard South and West Sunset Road. Richard Brian Las Vegas Review-Journal @vegasphotograph mass shooting

Participants take part in a candlelight vigil condemning the mass shooting at Route 91 Harvest country music festival on Monday, Oct. 2, 2017, at the intersection Las Vegas Boulevard South and West Sunset Road. Richard Brian Las Vegas Review-Journal @vegasphotograph mass shooting

Attendees of a vigil for the shooting victims of the Route 91 country music festival share a moment of silence on Monday, October 2, 2017, at the Student Union courtyard, at UNLV, in Las Vegas. A gunman in a Mandalay Bay hotel room shot into a crowd of thousands at the outdoor country music concert late Sunday, killing at least 59 people and injuring more than 525. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto

Oscar Ibarra of Victory Outreach Las Vegas leads a group in song during a vigil at Las Vegas City Hall in Las Vegas, Monday, Oct. 2, 2017. Ibarra lead the song with a new guitar he bought that day for the vigil. Bridget Bennett Las Vegas Review-Journal @BridgetKBennett

Dawntaya Cooley wipes tears from the side of her face during a vigil at Las Vegas City Hall in Las Vegas, Monday, Oct. 2, 2017. Bridget Bennett Las Vegas Review-Journal @BridgetKBennett

Rahel Mehari, right, placers her hand on Jackson's, who preferred to only give that name, shoulder during a vigil at Las Vegas City Hall in Las Vegas, Monday, Oct. 2, 2017. Bridget Bennett Las Vegas Review-Journal @BridgetKBennett

Grief counselors were available for attendees of a vigil for the shooting victims of the Route 91 country music festival on Monday, October 2, 2017, at the Student Union courtyard, at UNLV, in Las Vegas. A gunman in a Mandalay Bay hotel room shot into a crowd of thousands at the outdoor country music concert late Sunday, killing at least 59 people and injuring more than 525. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto

Attendees packed the UNLV Student Union courtyard during a vigil for the shooting victims of the Route 91 country music festival on Monday, October 2, 2017, in Las Vegas. A gunman in a Mandalay Bay hotel room shot into a crowd of thousands at the outdoor country music concert late Sunday, killing at least 59 people and injuring more than 525. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto

Candles being placed as part of the vigil, near East Sahara Avenue and South Las Vegas Boulevard, that honors the victims of the shooting that occurred Oct. 1 in Las Vegas, Monday, Oct. 2, 2017. Gabriella Benavidez Las Vegas Review-Journal @latina_ish

People gather at a vigil near the Town Square Las Vegas in remembrance of the Mandalay Bay shooting victims in Las Vegas, Monday, Oct. 2, 2017. Joel Angel Juarez/Las Vegas Review-Journal @jajuarezphoto

People gather at a vigil near the Town Square Las Vegas in remembrance of the Mandalay Bay shooting victims in Las Vegas, Monday, Oct. 2, 2017. The shooting took place Sunday night and killed at least 58 people and injured over 500 others. Joel Angel Juarez Las Vegas Review-Journal @jajuarezphoto

Dannah Lamb, right, kisses her daughter Charlotte's head during a candlelight vigil honoring the victims of the shooting that occurred Oct. 1, near East Sahara Avenue and South Las Vegas Boulevard in Las Vegas, Monday, Oct. 2, 2017. Gabriella Benavidez Las Vegas Review-Journal @latina_ish

Alberto Henriques, 56, of Las Vegas holds a candle during a vigil near the Town Square Las Vegas in remembrance of the Mandalay Bay shooting victims in Las Vegas, Monday, Oct. 2, 2017. The shooting took place Sunday night and killed at least 58 people and injured over 500 others. Joel Angel Juarez Las Vegas Review-Journal @jajuarezphoto

Broken windows can be seen from Mandalay Bay where Stephen Paddock fired at concertgoers on Sunday night, killing at least 59 and injuring more than 500. (Joel Angel Juarez/Las Vegas Review-Journal) @jajuarezphoto

Broken windows can be seen from Mandalay Bay where Stephen Paddock fired at concertgoers on Sunday night, killing at least 59 and injuring more than 500. (Joel Angel Juarez/Las Vegas Review-Journal) @jajuarezphoto

Emergency vehicles head down Las Vegas Boulevard following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Cars left on Las Vegas Boulevard following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Festival grounds for Route 91 rise in the background as Las Vegas police investigate following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

A man and woman embrace outside Las Vegas Metropolitan Police Department in Las Vegas, Sunday, Oct. 1, 2017. Families seeking information on family members should go the department headquarters at 400 S. Martin L. King Blvd., or call 866-535-5654. (Bridget Bennett/Las Vegas Review-Journal) @Bridgetkbennett

The Clark County Coroner arrives as Las Vegas police investigate following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Las Vegas police investigate following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Las Vegas police investigate following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Tourists make their way back to their hotels following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Festival grounds for Route 91 rise in the background as Las Vegas police investigate following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Festival grounds for Route 91 rise in the background as Las Vegas police investigate following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

A man takes in the scene following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

A view looking down Las Vega Boulevard following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Las Vegas police gather following an active shooter situation that left more than 50 dead and 400 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Tourists make their way back to their hotels following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Las Vegas police and emergency vehicles on scene following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Las Vegas police gather following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

A cowboy hat is left behind as people make their way out of Tropicana Las Vegas following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

A police officer directs people at the Tropicana Las Vegas following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

People relax in a convention center area during lockdown at the Tropicana Las Vegas following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

People clap after being updated by a Las Vegas police officer during lockdown at the Tropicana Las Vegas following an active shooter situation that left at least 59 dead and more than 500 injured on the Las Vegas Strip during the early hours of Monday, Oct. 2, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

People evacuate to the Luxor from near the shooting site near Mandalay Bay on Sunday, Oct. 1, 2017, in Las Vegas. Chitose Suzuki Las Vegas Review-Journal

Festival-goers attending the Route 91 Harvest Festival were evacuated to the Thomas and Mack Arena early Monday morning, Oct. 2, 2017, following a shooting situation on the Las Vegas Strip. Richard Brian Las Vegas Review-Journal @vegasphotograph

Las Vegas police close access to Fremont Street Experience at Las Vegas Boulevard, North in downtown Las Vegas early Monday, Oct. 2, 2017, after a mass shooting on the Strip that left at least 59 dead and more than 500 injured Sunday night. K.M. Cannon Las Vegas Review-Journal @KMCannonPhoto

View of the the Strip near Mandalay Bay in Las Vegas on Sunday, Oct. 1, 2017. (Chitose Suzuki/Las Vegas Review-Journal)

Police officers walk through the Luxor where people have been evacuated during a shooting on the Strip on Sunday, Oct. 1, 2017, in Las Vegas. Chitose Suzuki Las Vegas Review-Journal

An ambulance with a patient inside rushes to the emergency room at the Sunrise Hospital and Medical Center after a shooting occurred on The Strip in Las Vegas, Monday, Oct. 2, 2017. (Joel Angel Juarez/Las Vegas Review-Journal) @jajuarezphoto

Festival-goers attending the Route 91 Harvest Festival were evacuated by bus to Thomas and Mack Arena early Monday, Oct. 2, 2017, following a shooting situation on the Las Vegas Strip. Richard Brian Las Vegas Review-Journal @vegasphotograph

Festival-goers attending the Route 91 Harvest Festival were evacuated to the Thomas and Mack Arena early Monday, Oct. 2, 2017, following a shooting situation on the Las Vegas Strip. Richard Brian Las Vegas Review-Journal @vegasphotograph

Festival-goers attending the Route 91 Harvest Festival were evacuated by bus to Thomas and Mack Arena early Monday morning, Oct. 2, 2017, following a shooting situation on the Las Vegas Strip. Richard Brian Las Vegas Review-Journal @vegasphotograph

Festival-goers attending the Route 91 Harvest Festival were evacuated by bus to Thomas and Mack Arena early Monday morning, Oct. 2, 2017, following a shooting situation on the Las Vegas Strip. Richard Brian Las Vegas Review-Journal @vegasphotograph

Festival-goers attending the Route 91 Harvest Festival are patted down after being evacuated to the Thomas and Mack Arena early Monday morning, Oct. 2, 2017, following a shooting situation on the Las Vegas Strip. Richard Brian Las Vegas Review-Journal @vegasphotograph

People line up to donate blood at 7135 W. Sahara Ave., early Monday morning. (Michael Shoro/Las Vegas Review-Journal)

People line up to donate blood at 7135 W. Sahara Ave., early Monday morning. (Michael Shoro/Las Vegas Review-Journal)

Las Vegas Metropolitan Police Department Sheriff Joseph Lombardo address the media outside Las Vegas Police Department Headquarters in Las Vegas, Sunday, Oct. 1, 2017. Bridget Bennett Las Vegas Review-Journal @Bridgetkbennett

Las Vegas Metropolitan Police Department Sheriff Joseph Lombardo address the media outside Las Vegas Police Department Headquarters in Las Vegas, Sunday, Oct. 1, 2017. Bridget Bennett Las Vegas Review-Journal @Bridgetkbennett

Las Vegas Metropolitan Police Department Sheriff Joseph Lombardo address the media outside Las Vegas Police Department Headquarters in Las Vegas, Sunday, Oct. 1, 2017. Bridget Bennett Las Vegas Review-Journal @Bridgetkbennett

Las Vegas Metropolitan Police Department Sheriff Joseph Lombardo address the media outside Las Vegas Police Department Headquarters in Las Vegas, Sunday, Oct. 1, 2017. Bridget Bennett Las Vegas Review-Journal @Bridgetkbennett

People who have been evacuated from Mandalay Bay hotel-casino walk on Las Vegas Boulevard as Las Vegas police respond during an active shooter situation on the Strip on Sunday, Oct. 2, 2017, in Las Vegas. Bizuayehu Tesfaye Las Vegas Review-Journal @bizutesfaye

People walk through the Tropicana Las Vegas after being searched during an active shooter situation on the Las Vegas Stirp in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

People are searched by Las Vegas police at the Tropicana Las Vegas during an active shooter situation on the Las Vegas Stirp in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

A man waits as the Tropicana Las Vegas goes on lockdown during an active shooter situation on the Las Vegas Strip in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

People wait as the Tropicana Las Vegas goes on lockdown during an active shooter situation on the Las Vegas Strip in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

A wounded woman is moved outside of the Tropicana during an active shooter situation on the Las Vegas Strip in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Medics treat the wounded as Las Vegas police respond during an active shooter situation on the Las Vegas Strip in Las Vegas on Sunday, Oct. 1, 2017. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto

Emergency workers in the Tropicana during an active shooter situation on the Las Vegas Stirp in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

People assist a wounded woman at the Tropicana during an active shooter situation on the Las Vegas Strip in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

People assist a wounded woman at the Tropicana during an active shooter situation on the Las Vegas Strip in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

A wounded person is walked on a wheelbarrow as Las Vegas police respond during an active shooter situation on the Las Vegas Strip in Las Vegas on Sunday, Oct. 1, 2017. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto

An ambulance heads down Tropicana avenue near Las Vegas Boulevard during an active shooter situation in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Las Vegas police respond during an active shooter situation on the Las Vegas Strip near Tropicana Avenue in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Emergency workers treat the wounded as Las Vegas police respond during an active shooter situation on the Las Vegas Strip in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Pedestrians look on as Las Vegas police respond during an active shooter situation on the Las Vegas Strip near Tropicana Avenue in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Las Vegas police respond during an active shooter situation on the Las Vegas Strip near Tropicana Avenue in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Emergency workers treat the wounded as Las Vegas police respond during an active shooter situation on the Las Vegas Strip in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Pedestrians look on as Las Vegas police respond during an active shooter situation on the Las Vegas Strip near Tropicana Avenue in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

People watch from a pedestrian bridge as Las Vegas police respond during an active shooter situation on the Las Vegas Strip near Tropicana Avenue in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

Las Vegas police respond during an active shooter situation on the Las Vegas Strip near Tropicana Avenue in Las Vegas on Sunday, Oct. 1, 2017. Chase Stevens Las Vegas Review-Journal @csstevensphoto

A staff member in scrubs enters the back of University Medical Center's Trauma Center on Charleston Boulevard in Las Vegas, Sunday, Oct. 1, 2017. (Bridget Bennett/Las Vegas Review-Journal) @Bridgetkbennett

Officers are present outside University Medical Center's Trauma Center on Charleston Boulevard in Las Vegas, Sunday, Oct. 1, 2017. (Bridget Bennett/Las Vegas Review-Journal) @Bridgetkbennett