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Duncan Lingle

Instructor # 2728434 | TRAEX Tactical Solutions LCC

Certified with the USCCA since 3/13/2022

Certification Renewal Date 3/13/2027

  • duncanblingle@traextacticalsolutions.com
  • (571) 455-0215

Vienna, VA, 22180

5.0

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USCCA Certifications

  • Concealed Carry & Home Defense
  • Countering the Mass Shooter
  • Emergency & First Aid

My Biography

Duncan B. Lingle is the owner, and Chief Instructor, of TRAEX Tactical Solutions LLC. He brings over 32 years of law enforcement experience (at the local (police officer) and federal level (special agent)) to his training courses and seminars. In 2018, and after 28 years of service at the federal level, he retired as a Section Chief of the U.S. Drug Enforcement Administration (DEA) and served in many leadership and training roles throughout his career, to include two overseas tours and numerous domestic assignments. Mr. Lingle has a myriad of training and instructor certifications issued from the DEA, the National Rifle Association, and the U.S. Concealed Carry Association. Throughout his tenure Mr. Lingle has trained thousands of law enforcement officers and civilians sound tactical, refuse to be a victim, firearms, and safety courses and techniques.

Request a Class

VIRTURAL Instruction: The four-hour (can be broken into two, two-hour sessions) seminar provides recently graduated high school seniors, destined for college, a foundation of personal safety and situational awareness, to be used as they transition to the college environment. The seminar will provide students a myriad of personal safety considerations, techniques, and tools to be applied while attending college, and in daily life.

The seminar covers the following topics: Psychology of Criminals Mental Preparedness Physical Security Home / Dorm Security Drug and Alcohol Awareness/Dangers Automotive Security Domestic Violence / Stalking Travel Security Information Technology Security Personal Protection Devices Classroom / Workplace Security University Police Resources And much more!!!!

This seminar can be provided to private, public and religious based schools, as well as churches. For an additional $50 (per student) a separate session will be provided to the parents of each student. Please provide a venue (often times in a school, community room, or church).

Group and school discounts are available depending on the size of the class/group. Please contact TRAEX Tactical Solutions for additional information.

The seminar provides a foundation of personal safety and situational awareness practices, to be used as you travel internationally. The information you receive will aid in you in making safe decisions through the understanding of travel techniques, and tools to be considered as you plan your trip, find hotels, tours, and utilized throughout your travels overseas.

Group rates may apply. Please contact TRAEX Tactical Solutions for more information regarding group pricing.

A venue for the course can be determined to meet the needs of the student/group. There must be a minimum of 10 students for the course to be taught.

The Church Safety Protecting Your Congregation Seminar provides a foundation of safety techniques, precautions, situational awareness, and assessments needed to help protect your church and congregation. The seminar includes church leadership, staff and members, as you learn to create safety and contingency plans, emergency procedures and how to utilize the skills and knowledge of the members of your church to aid in the safety of the congregation.

Proactively train to identify, understand, and mitigate current day threats your church may face. Plan now to help prevent an incident targeting your church, and have a plan in those instances, where there may be a threat to your congregation and facilities.

Please contact TRAEX Tactical Solutions for information related to group rates, and the selection of a venue.

The Countering the Mass Shooter Threat Seminar provides you with the facts related to mass shooting incidents, as supported by data collected from 48 mass shootings, and understand the similarities of those events. This will assist you in answering the question – what can be done to counter this threat? Based on the discussion and instruction you will understand the importance of developing an Emergency Operations Plan, and the systematic forethought that goes into mass casualty preparation, abatement and threat mitigation.

What you will learn: Risk Assessment and Factors Warning Signs and Direct Indicators Threat Mitigation Reactions: Run, Hide, Fight Emergency Operations Action Plan Triage and Treatment of the Wounded 911 Response Case Studies Special Considerations: School/Church

Please contact TRAEX Tactical Solutions for group rates, as well as venue selection.

The seminar provides a foundation of personal safety, and situational awareness techniques, to be used throughout one's personal life and daily activities. The seminar focuses and discusses a myriad of personal safety considerations, techniques, and tools to be applied as they at home, in public, traveling, and daily life.

The seminar will discuss the following topics: Psychology of Criminals Mental Preparedness Physical Security Home/Office Security Drug and Alcohol Awareness/Dangers Automotive Security Domestic Violence/Stalking Travel Security Information Technology Security Personal Protection Devices Workplace Security And much more!!!!

Please contact TRAEX Tactical Solutions for group rates, as well as venue selection.

Do you have the knowledge and skills to apply first aid, self-care, and potentially lifesaving techniques to save your or another's life during a medical emergency, or traumatic event?

This seminar provides you with knowledge, skills and abilities needed to help stabilize a patient, or yourself, and get them to the emergency room as quickly, and safety as possible.

Please contact TRAEX Tactical Solutions for group rates, as well as venue selection.

One of the most important steps toward ensuring your own safety is having a personal safety strategy in place before you need it. The Refuse To Be A Victim® program teaches the tips and techniques you need to be alerted to dangerous situations and to avoid criminal confrontation.

Seminars are held across the nation and are open to individuals of all ages. Today, thousands of federal, state and local law enforcement officials and civilians from across the nation utilize this popular program in their crime prevention and community policing initiatives to ,help protect their communities.

Contact TRAEX Tactical Solutions and make a reservation to attend or host a seminar for your family, friends, business colleagues, and neighbors.

Please contact TRAEX Tactical Solutions for group rates, as well as venue selection.

Training to help secure your safety in an ever-changing and dangerous world.

Proactively train to identify, understand, and abate the current day threats that a real estate agent may face during the first meeting with clients, open houses, maintenance appointments, inspections, as well as in your daily life.

Available for groups of real estate agents, and real estate agency sponsorship.

Please contact TRAEX Tactical Solutions for group rates, and venue selection.

This course is limited to those real estate agents who are associated with the Keller Williams office located in Vienna, VA (and their surrounding offices) (Please contact the Keller Williams Office in Vienna if you have a question regarding your eligibility).

The first 20 participants are free.

In many respects the real estate profession should be considered a high-risk occupation. Real Estate agents have no or limited formal training when they meet new clients for the first time, during open houses, or traveling from property to property in an unknown and on occasion unsafe neighborhoods. Agents must often meet strangers alone in vacant houses and show properties constantly exposed to risk, and in many instances an open target of criminals. Robbery, rape, and murder are not unheard of in this industry. In fact, agents are regularly reminded of the fact that fellow associates are attacked nationwide on a regular basis.

According to Bureau of Labor and Statistics, an estimated 75 real estate professionals have been killed each year since 2003. Many real estate agents have now resorted to carrying defensive weapons, such as tasers, pepper spray, and firearms when they meet potential clients, or in the seminar of their profession. Very few of those have little to no training to do so safely.

Considering these known and unknown risks there are steps real estate agents can take to help prevent being a target of violent assaults and being targeted by criminals. Being safe is often more than having the first-time meeting of a prospective client at the office or making a copy of their driver’s license. There are a myriad of techniques, processes and procedures that can be employed, by both the agent and brokerage company, to help ensure the safety of the agent, and the company, as well as their clients.

TRAEX Tactical Solutions, working in concert with the United States Concealed Cary Association, provides a two-hour Real Estate Agent Safety and Security Seminar, which provides agents with instruction that will address the following (and much more):

Known Risks and Abatement

Situational Awareness Events and Threat Indicators How to Break the Attack Cycle Mind Set and Defensive Strategies Threat De-escalation Use of Technology to Aid in Safety Understanding Personal Defense Options and Considerations

The TRAEX Tactical Solutions New Parents Seminar offers an invaluable opportunity for expectant and new parents to gather essential knowledge and insights as they embark on this remarkable journey of parenthood. Throughout the seminar, we delve into a comprehensive range of topics designed to empower and guide you through the challenges and joys that come with welcoming a new life into your family.

The seminar provides new parents with the knowledge and skills you need to keep their infants and young children safe both at home and outside the house. The seminar is designed for parents of children aged newborn to three years of age and is often a prerequisite for more advanced training.

The seminar content includes: • Safety hazards in the home, such as falls, burns, poisonings, and suffocation. • Childproofing the home, such as securing loose furniture and electrical outlets, and installing safety gates and locks. • The importance of CPR and first aid training for infants and children. • Car seat safety, including proper installation and use of car seats and booster seats. • Water safety, including how to prevent drowning and what to do in case of an emergency. • Fire safety, including how to prevent and respond to home fires. • Basic emergency preparedness and how to create a family emergency plan. • How to safely store and secure chemicals, medications, firearms and other dangerous items in the home. • How to shop, dine, and travel safely with a newborn or infant. • Techniques and suggestions on how to use common objects as defense and safety tools. • Toy safety. • And much more.

By joining our New Parents Seminar, you become part of a supportive community where you can connect with fellow parents, share experiences, and build lasting friendships. Our commitment to evidence-based information, interactive learning, and compassionate guidance ensures that you leave the seminar feeling prepared, informed, and ready to embrace the wonderful adventure of parenthood.

We look forward to welcoming you to our New Parents Seminar and being a part of your exciting journey into parenthood. Your child's first moments are precious, and we are here to help you make them truly unforgettable.

$59 for the parents, and $39 each for up to two additional caregivers, grandparents, older siblings, supportive friends, etc.

5.0

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9 Reviews

What Students Are Saying

  • Rating star large
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    Class taken on Thur, Sep. 10, 2026
    |Taught by

    Instructors

    • Duncan Lingle

      Vienna, Virginia

      Rating star large5.0
    "Duncan was informative and engaging. Only wish the class ran longer because it was so beneficial. "

    Submitted on Mon, Sep. 14, 2026 by Jennifer L.

  • Rating star large
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    Class taken on Thur, Sep. 10, 2026
    |Taught by

    Instructors

    • Duncan Lingle

      Vienna, Virginia

      Rating star large5.0
    "Amazing class - so insightful! Realtor safety at its best!"

    Submitted on Sat, Sep. 12, 2026 by Tipton M.

  • Rating star large
    Rating star large
    Rating star large
    Rating star large
    Rating star large

    Class taken on Thur, Sep. 10, 2026
    |Taught by

    Instructors

    • Duncan Lingle

      Vienna, Virginia

      Rating star large5.0
    "Excellent class"

    Submitted on Sat, Sep. 12, 2026 by Esther C.

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1 Insurance has been purchased by the USCCA and is one of the benefits of membership in the USCCA. USCCA members are additional insureds under a policy issued to the USCCA by Universal Fire and Casualty Insurance Company, an insurance company with its principal place of business in Hudsonville, MI. Coverage and benefits are subject to the terms, conditions, and exclusions of the insurance policy. Information provided herein is for informational purposes and is not intended to be a representation of coverage that may exist in any particular situation. Contact Delta Defense’s Member Engagement Team at 800-674-9779 with any questions.