Jack Daniel Johncox

Research Associate · ALERRT Center · Texas State University

Active Threat Response Officer Decision-Making Law Enforcement Training

I’m a Research Associate at the ALERRT Center at Texas State University, where I turn data into life-saving strategies for first responders. My work spans the full research lifecycle, from study design and data collection to peer-reviewed publication, across topics including active threat response, officer decision-making, and the science of law enforcement training.

Recent Publications

Research Report

The Role of Locked Doors and Access Control in School-Based Active Shooter Events: An Analysis of U.S. K–12 Active Shooter Incidents, 2000–2025

Martaindale, M.H., Johncox, J.D., & Eleuterio-da-Rocha, J. · ALERRT Center at Texas State University · 2026

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Journal Article

Striking or Grappling? Comparing Public and Officers' Perceptions of Police Use of Force

Eleuterio-da-Rocha, J., Tanksley, P.T., Martaindale, M.H., Johncox, J., & Blair, J.P. · Journal of Criminal Justice · 2026

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Journal Article

Active Attacks with Motor Vehicles: A Short Report and Case Study of the 2025 New Year's Day Attack in New Orleans, LA

Blair, J.P., Martaindale, M.H., Tanksley, P.T., & Johncox, J.D. · American Journal of Criminal Justice · 2025

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