Participants Database – Display Single Record

Last content update and data verfication was on Friday, April 4, 2025, at 19:09:07 (America/New York — EST — UTC -5) by MEB MediaX Webmaster or authorized designee.

Details

Mass Shooting
Borderline Bar and Grill
Municipality
Thousand Oaks
State
California – CA
Zip Code
91361
Region
West
Division
Pacific
Incident Date
November 7, 2018
Venue Type
Nightclub
Killed
12
Injured
16

Ranking Data

Preventable Factors/Rankings
181 1623618370 Parental Failures/Interventions Lacking – Parent(s) Negligent for Inaction Against Dependent Child (Perpetrator) Behavioral Red Flag Law(s) Nonexistent - Behavioral Red Flag Law(s) Nonexistent Behavioral Red Flags Ignored/Response Delayed - Perpetrator(s) Behavior Personally Erratic/Deviated from Individual/Societal Norms Behavioral Red Flags Ignored/Response Delayed - Perpetrator(s) Was in Directed and Overt Incident Preparatory Mode Behavioral Red Flags Ignored/Response Delayed - Perpetrator(s) Expressed Suicidal Ideation and/or Suicide by Police and/or Expressed Violent Intentions Privately and/or Publicly in Person and/or In Any Medium Commercial Establishment Failure - Commercial Establishment Failure Criminal Justice System Failures - Judicial System Failure - Custodial Issues - Questionable Release/Remand of Perpetrator(s) Criminal Justice System Failures - Judicial System Failure - Questionable "Blue Paper" Rejections of Perpetrator(s) Criminal Justice System Failures - Judicial System Failure - Questionable Search Warrant Rejection(s) for Perpetrator(s) Criminal Justice System Failures - Law Enforcement Failure - Delayed Response or Inaction to Perpetrator(s) at Incident Scene Criminal Justice System Failures - Law Enforcement Failure - Delayed/Ignored/or No Follow-up to Telltale Perpetrator(s) Event(s) Preceding Incident Criminal Justice System Failures - Probation/Parole Failure - Failure to Pursue/Report Probation/Parole Violation(s) for Perpetrator(s) Criminal Justice System Failures - Prosecutorial Failure - Failure to Pursue Warranted Criminal Charges Against Perpetrator(s) and/or Failure to Petition the Court for a Red Flag Hearing Gun Laws Inadequate - Inadequate Gun Law(s) Contributed to Perpetrator(s) Execution of the Incident Gun Laws Inadequate - Inadequate Gun Law(s) Exacerbated the Incident Mental Health System Failures/Interventions Lacking - Incident Principals Attested to Mental Health System Failure for Perpetrator(s) Mental Health System Failures/Interventions Lacking - Incident Principals Charged With Mental Health System Failure for Perpetrator(s) Mental Health System Failures/Interventions Lacking - Incident Principals Identified With Metal Health System Failure for Perpetrator(s) School System Failures/Interventions Lacking – School Officials Negligent for Inaction Against Perpetrator(s) Unnecessarily Accessible Perpetrator(s) Weapon(s) - Weapon(s) Was Unnecessarily Accessible to the Perpetrator Venue Lacked Armed Individuals/Personnel - Venue Lacked Armed Individuals (Civilians)/Personnel (Military/Police/Security) Venue Structural Security Lacking - Venue Had Limited Structural Security Venue Structural Security Lacking - Venue Structural Security was Nonexistent Venue Perimeter Security Lacking - Venue Had Limited Perimeter Security Venue Perimeter Security Lacking - Venue Perimeter Security was Nonexistent Vexatious Cascade of Events Beset Perpetrator(s) - Vexatious Cascade of Events Beset Perpetrator(s) Whatever System Failure - Whatever System Failure
    Blatant Rankings - Points Doubled
    0
    Preventable Rankings Score
    0
    Preventable Status
    Completely Unpreventable

    Preventable Factors

    Preventable Factor Details

    Last content update and data verfication was on Friday, April 4, 2025, at 19:09:07 (America/New York — EST — UTC -5) by MEB MediaX Webmaster or authorized designee.

    Takeaway(s): —None. Incident Preventable Factor(s): —None. Editor’s Note: We find it difficult to rank mental health failures as a contributor to this incident due to it being somewhat inconsequential and/or not having a direct connection, and because of the passage of time. “Police and a mental health crisis team visited [the perpetrator] in 2017 for his irate and irrational behavior, but they decided not to detain him at a psychiatric facility. A high school teacher raised claims that [the perpetrator] had physically assaulted her as a student but she was encouraged not to push the incident so as to not endanger his future in the Marine Corps (USMC). In her statement, the teacher alleged that [the perpetrator] had issues long before his military service. Although he had served overseas in the military, behavioral scientist and clinical psychologist Lisa Jaycox said that it was premature to say whether [the perpetrator] suffered from post-traumatic stress disorder or if it was a factor in the shooting.” 1 Editor’s Note: We find it difficult to rank gun law inadequacy as a contributor to this incident. While the  30-round magazines (which may have increased the number of people killed and/or injured in a short span) possessed by the perpetrator were illegal in California, they weren’t in neighboring states. “Investigators also recovered 7 high capacity 30-round magazines at the scene. Those are illegal in California, but can be purchased in neighboring states. No other weapons were found at the crime scene or at his home.” 2 Source(s): 1. None. Last Edited June 4, 2021. “Thousand Oaks Shooting”. Wikipedia. Retrieved June 4, 2021, from https://en.wikipedia.org/wiki/Thousand_Oaks_shooting. 2. Jaffe, Ina. November 28, 2018. “Authorities Describe ‘Confusion And Chaos’ At Borderline Bar Shooting In California”. NPR. Retrieved June 4, 2021, from https://www.npr.org/2018/11/28/671353612/no-motive-yet-found-for-mass-shooting-at-borderline-bar-and-grill.

    Fluidity

    Criminal Case Pending?
    Civil Litigation Pending?
    Trending
    ⯅

    Administrative Information

    Credible Source Inquires?
    2
    Are Credible Source Inquires Inline Endnotes?
    Assessment Status?
    Complete
    Editorial Board Approval?

    Record Information

    Last Updated
    Lexar
    Record ID
    19
    Private ID
    I9FGRJX
    Date Recorded
    2021-06-03 18:11:08
    Date Updated
    2023-10-22 01:54:38
    Last Accessed
    Type Designation