What Makes a Use of Force Expert Actually Qualified?

Not all expertise is created equal—and in use of force litigation, the difference matters.

The Problem with Credentials Alone

When evaluating expert witnesses for use of force cases, many attorneys focus primarily on credentials: years of service, rank achieved, certifications held. While these factors matter, they do not answer the most important question: 

Can this person analyze the specific decision points that matter in my case?

A chief of police with 30 years of experience may have never personally investigated an officer-involved shooting. A use of force instructor may teach policy but lack experience applying that policy under the stress and uncertainty of real critical incidents. A forensic consultant may understand video analysis but not human performance under threat conditions.

Credentials establish baseline legitimacy. But in litigation, what separates a qualified expert from a merely credentialed one is the ability to perform decision-point analysis grounded in operational experience and validated research.

What Actually Qualifies Someone to Analyze Use of Force

1. Direct Investigative Experience in Critical Incidents

The foundation of credible use of force analysis is firsthand experience investigating these incidents—not as a witness, but as the person responsible for reconstructing what happened and why.

This means:

• Leading or participating in officer-involved shooting investigations

• Conducting use of force reviews as a supervisor or investigator

• Interviewing officers immediately after critical incidents

• Reconstructing timelines from body-worn camera, witness statements, and physical evidence

• Presenting findings to prosecutors, command staff, or review boards

An expert who has investigated multiple OIS cases understands the investigative process, the evidence that matters, and how decisions are actually made under pressure. They've seen the gap between what video shows and what officers perceived. They've documented how quickly events unfold and how limited information shapes decisions.

This experience cannot be replaced by teaching or reading case studies. It is learned by sitting across from involved officers, reviewing footage at 2 a.m., and reconstructing events when the margin for error is zero. 

2. Understanding of Human Performance Under Stress

Use of force decisions are made by human beings operating under some of the most stressful conditions imaginable. Any analysis that ignores human performance limitations is incomplete.

Qualified experts should be able to explain—and apply—research-based principles including:

• Perception and attention narrowing under stress

• Action-reaction time gaps between threat stimulus and officer response

• Memory encoding limitations during critical incidents

• Time distortion and the difference between real-time events and slow-motion review

• Threat recognition and decision-making under ambiguity and time pressure

This knowledge should come from formal training in force science, human factors, or similar research-backed disciplines—not just "common sense" or personal opinion.

Without this foundation, an expert may default to outcome-based analysis: judging decisions by what was learned later rather than what was known at the time. This is the very definition of hindsight bias, and it has no place in objective expert analysis.

3. Ability to Perform Timeline and Decision-Point Reconstruction

Video evidence is valuable, but it doesn't speak for itself. Frame-by-frame review reveals when things happened, but not necessarily what the officer perceived or what information was available to guide decisions.

A qualified expert must be able to:

• Reconstruct precise timelines using video, audio, and witness accounts

• Identify decision points—the moments when the officer had to choose a course of action

• Evaluate what information was available at each decision point

• Distinguish between facts the officer knew and facts discovered later

• Explain how perception, distance, movement, and time constraints affected decision-making

This is analytical work, not advocacy. It requires the discipline to separate what the evidence shows from what one wishes it showed.

4. Operational Knowledge of Tactics, Training, and Policy

Understanding what officers are trained to do and what they are expected to do under policy is essential to evaluating whether their actions were reasonable.

But this knowledge must be grounded in reality, not theory.

An expert should understand:

• What use of force training actually teaches (not just what the manual says)

• How tactics are applied in dynamic, evolving situations

• The difference between optimal tactics and reasonable tactics under the circumstances

• How policy is interpreted and applied in the field

• The limitations of training and policy in predicting real-world responses

This is why active or recently active law enforcement experience matters. Policies change, training evolves, and tactics that were standard practice ten years ago may no longer be taught. An expert whose experience is decades old may not understand current standards.

5. Objectivity and Analytical Discipline

Perhaps the most important qualification—and the hardest to verify from a resume—is the expert's commitment to objective, evidence-based analysis rather than advocacy.

A qualified expert:

• Forms opinions on a case-by-case basis, grounded in the evidence

• Can articulate why certain facts support or undermine an officer's decision

• Acknowledges limitations in the evidence and areas of legitimate debate

• Does not reflexively defend or condemn officers based on outcome

• Can clearly explain reasoning in a way that withstands cross-examination

An expert who has worked with both prosecutors and defense counsel, or with both plaintiffs and municipalities, is more likely to maintain this independence. An expert who only works for one side may have credibility issues regardless of their credentials.

6. Ability to Communicate Complex Concepts Clearly

Even the most qualified expert is ineffective if they cannot explain their analysis in plain language to judges and juries.

This requires:

• Translating technical concepts (action-reaction gaps, perceptual narrowing) into accessible terms

• Using examples and analogies that make abstract principles concrete

• Remaining composed and credible under cross-examination

• Avoiding jargon, condescension, or defensiveness

Testimony experience matters—but only if it demonstrates the ability to educate rather than advocate, and to withstand scrutiny with professionalism.

Red Flags: What Does NOT Qualify Someone

Experience Alone Without Analytical Training

A 25-year patrol officer may have responded to countless calls, but if they never investigated use of force incidents or received training in decision-point analysis, their "experience" may not translate to expert-level analysis.

Certifications Without Operational Application

Holding a use of force instructor certification proves teaching ability, not investigative or analytical competence. Training others is valuable, but it's not the same as reconstructing what happened in a specific incident.

Academic Knowledge Without Field Experience

A researcher who has studied use of force but never worked in law enforcement may understand theory without understanding application. Conversely, an officer with decades of experience but no formal training in human performance may rely on intuition rather than evidence-based principles.

One-Sided Practice

An expert who only testifies for the defense—or only for the prosecution—raises questions about objectivity. While it's not disqualifying on its own, it should prompt scrutiny of whether opinions are driven by evidence or by loyalty to a particular client base.

Outcome-Driven Analysis

The biggest red flag is an expert who begins with a conclusion and works backward. If the analysis focuses primarily on the outcome (e.g., "the suspect was unarmed, therefore force was unjustified") rather than the decision points and information available at the time, the expert is engaged in advocacy, not analysis.

How to Evaluate an Expert's Qualifications

When considering a use of force expert, ask:

About Investigative Experience:

• How many officer-involved shootings have you investigated?

• In what capacity? (Lead investigator, team member, supervisory reviewer?)

• What was your role in timeline reconstruction and decision-point analysis?

About Training:

• What formal training have you received in force science or human performance?

• Can you explain action-reaction time and how it applies to my case?

• How do you account for perceptual limitations when reviewing video evidence?

About Methodology:

• How do you distinguish between decision-point analysis and outcome analysis?

• What evidence do you rely on to reconstruct what the officer knew at each moment?

• How do you handle conflicting evidence or ambiguity?

About Experience:

• Have you worked with both defense and prosecution? Plaintiffs and municipalities?

• How many times have you testified? In what types of cases?

• Can you provide references from attorneys you've worked with?

About This Case:

• Based on what you know so far, what are the key decision points?

• What evidence would you need to form an opinion?

• Are there any issues that fall outside your area of expertise?

An expert who can answer these questions clearly and specifically—without evasion or overconfidence—is likely qualified. An expert who deflects, overgeneralizes, or focuses only on credentials may not be.

Why This Matters

Attorneys face significant pressure to find the "right" expert quickly—someone with impressive credentials who will support their theory of the case. But in use of force litigation, where the stakes are high and scrutiny is intense, the wrong expert can do more harm than good.

A poorly qualified expert may:

• Provide opinions that don't withstand cross-examination

• Miss critical decision points that undermine the case

• Rely on hindsight rather than evidence-based analysis

• Damage credibility by overstating conclusions or ignoring contrary evidence

Conversely, a truly qualified expert—one with the right combination of investigative experience, analytical training, and professional objectivity—can clarify what matters, when it matters, and why certain facts carry more weight than others.

This clarity is what allows counsel to make informed strategic decisions: whether to settle or proceed to trial, which arguments to emphasize, and where vulnerabilities exist.

Final Thought

Credentials open the door. But what qualifies an expert to analyze use of force is the ability to reconstruct decision points, apply human performance research, evaluate evidence objectively, and communicate findings clearly.

Not every experienced officer can do this. Not every certified instructor can do this. And not every self-proclaimed expert can do this.

The attorneys who take the time to evaluate not just who an expert is, but what they can actually do, are the ones who get analysis that withstands scrutiny—and who avoid the costly mistake of relying on credentials alone.

About Barrett Critical Incident Consulting

Barrett Critical Incident Consulting provides independent, decision-point focused use of force analysis for attorneys handling criminal defense, civil rights, and municipal liability matters.

Our work combines investigative experience, Force Science–based human performance principles, and disciplined, evidence driven methodology.

Many engagements begin with an informal early-case review to identify key decision points and potential vulnerabilities before formal designation.

For case inquiries or confidential consultation:
dustan@barrettcriticalconsulting.com | 214-403-4289