EVIDENCE ACROSS MULTIPLE AGENCIES

STORM’s training methodology has been evaluated through published research,
public agency data, and emerging research—showing measurable outcomes across
multiple real-world implementations.

SAINT PAUL POLICE DEPARTMENT

PEER-REVIEWED. PUBLISHED. SIX YEARS OF FIELD DATA.

A six-year analysis examined
2,845 documented use-of-force incidents
before, during, and after implementation of STORM Training Group curriculum
by the Saint Paul Police Department.

Published in Policing: A Journal of Policy and Practice (2024)

36%
Overall Use of Force

Reduction in overall use-of-force incidents following implementation.

86%
Reduction in Strikes

Dramatic decrease in officers using strikes during force encounters.

62%
Reduction in Chemical Spray

Significant decrease in chemical spray deployment following implementation.

55%
Reduction in Subject Injuries

Substantial reduction in injuries to subjects during use-of-force incidents.

40%
Reduction in Officer Injuries

Officer injuries decreased despite an increase in subjects displaying aggressive behavior.

10x
Increase in Team Control

Use of coordinated team ground-control tactics increased substantially during implementation.

SAINT PAUL STUDY AT A GLANCE

2,845
DOCUMENTED INCIDENTS
64
DATA POINTS PER INCIDENT
6 YEARS
OF FIELD DATA
PEER-REVIEWED
PUBLISHED ANALYSIS

Additional Findings

  • 19% decrease in pain-compliance techniques and less-lethal weapons
  • 26% increase in team arrest-and-control techniques
  • 37% increase in multiple-officer controlled takedowns
  • 40% reduction in single-officer takedowns
  • 39% reduction in Taser deployment
  • Officer injuries decreased even as documented aggressive behavior increased 29%

MINNEAPOLIS POLICE DEPARTMENT

PUBLIC DATA. MEASURABLE CHANGE.

Publicly available City of Minneapolis data show substantial changes in reported
use of force during a period when STORM began providing academy instruction and
assisting with department-wide use-of-force in-service training.

Observational analysis of City of Minneapolis public data, 2021–2025

55.9%
Reduction in Force Per Arrest
Reportable force incidents per arrest declined from 0.725 to 0.320.
74.2%
Reduction in Officer Strikes
Reported strikes declined from 89 in 2021 to 23 in 2025.
73.5%
Reduction in Less-Lethal Impact Weapons
Reported deployments declined from 98 to 26.
30.7%
Increase in Arrests
Total arrests increased from 5,929 to 7,748.

These observational trends do not establish that STORM training caused the changes.
Policy, staffing, leadership, reporting practices, crime patterns, and other factors
may also have influenced the results.

APPLE VALLEY POLICE DEPARTMENT

PRELIMINARY FINDINGS. MEASURABLE OUTCOMES.

Preliminary findings from an ongoing evaluation of training implementation at the Apple Valley Police Department show substantial reductions in injuries, post-control force, and compression-risk exposure.

Research led by Dr. Sean Zauhar • Manuscript currently under peer review

50%
Reduction in Subject Injuries
Injuries to subjects decreased following implementation.

83%
Reduction in Officer Injuries
Injuries to officers decreased following implementation.

97%
Reduction in Post-Control Force
Post-control force incidents decreased following implementation.

93%
Reduction in Compression Risk
Compression-risk exposure decreased following implementation.

Significant injuries were fully eliminated following implementation.

Preliminary findings presented here are from ongoing research and have not yet been published in a peer-reviewed journal. Findings may be updated as the research and review process continues.

INDEPENDENT COVERAGE

Independent news organizations have reported on STORM’s training methodology and the measurable outcomes associated with its implementation.

STAR TRIBUNE

Encouraging Results From St. Paul Police Training

Coverage highlighted the program’s emphasis on leverage, positioning, team tactics and control strategies rather than reliance on strikes and weapons.


READ ARTICLE →

CBS MINNESOTA / WCCO

State of Policing

WCCO examined St. Paul’s training changes and reported lower levels of force, fewer injuries and historically low police-misconduct settlements.


READ COVERAGE →

POLICE1

Training Credited With Reducing Injuries & Force

Police1 reported reductions in force and injuries even as documented aggressive and assaultive subject behavior increased.


READ ARTICLE →

SEE IT IN THE REAL WORLD

See STORM training concepts applied during actual law-enforcement encounters.

Real-World Technique Breakdown: Ankeny

An Ankeny, Iowa use-of-force incident demonstrates officers applying control concepts consistent with the training methodology during an actual encounter.

Real-World Application

See an officer utilizing STORM Training Group techniques and concepts as a domestic assault suspect resists arrest.

PROFESSIONAL MEDICAL & LEGAL REVIEWS


Independent medical and legal professionals have reviewed STORM Training Group curriculum and supporting materials. Their complete written reviews are available below.


Dr. Jesse Corry, MD

Medical Review


READ REVIEW →


Dr. Paul Nystrom, MD

Medical Review


READ REVIEW →


Attorney John Cajacob

Legal Review


READ LETTER →

BRING THE SYSTEM BACK TO YOUR AGENCY

STORM does more than teach individual techniques. Our instructor-development model is designed to give law enforcement instructors a practical, evidence-informed system they can bring home, teach, evaluate and sustain within their own agency.

Foundation Instructor Trainer®

Our flagship instructor course gives agency trainers the framework, curriculum and instructional approach to bring STORM’s evidence-informed methodology back to their own officers.


EXPLORE INSTRUCTOR TRAINING

Host STORM Training

Bring STORM directly to your department or training facility and create a local opportunity for your agency and neighboring law enforcement professionals.


HOST A STORM COURSE

Not sure which path is right for your agency? We can help you determine the best way to bring the training into your program.