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Security Services

On Site Security

Our on-site security services refer to the measures and practices implemented to protect physical spaces, properties, and assets from unauthorized access, vandalism, theft, or other security threats. This type of security is primarily focused on safeguarding a specific location, such as a building, facility, or campus.

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Executive Protection

High-profile individuals, such as business leaders, celebrities, and sports personalities, hold significant value for the organizations they represent. Their public visibility exposes them, and their families, to potential threats. To ensure their safety, these VIPs require specialized and highly trained protection services.

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Specialized Security

Defender One Security works with medical institutions, private schools, daycare facilities, corporations, and residential communities to offer customized security solutions. Our security teams are well-versed in the latest security methodologies, guaranteeing that our clients receive the most effective protection possible. Specialized services may include tactical units, vehicle patrols, law enforcement personnel, and more.

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Private Investigation

Private investigation is an indispensable resource for providing vital information to support critical decisions, protect assets, and mitigate risks.

We offer private investigators to verify insurance claims, investigate employee misconduct, track spouses, investigate domestic violence situations, and more.

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Client Counseling

Drawing upon decades of expertise in security at Defender One, our team of dedicated board certified professionals are well-equipped to evaluate your existing security framework, pinpoint potential vulnerabilities, and take proactive measures to minimize security risks.

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Defender One Security is a distinguished provider of comprehensive security solutions throughout the Maryland region.
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Office Hours: Monday – Friday from 8:30 AM to 5:00 PM
Copyright © 2023 Defender One. All rights reserved.
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Defender One is a distinguished provider of comprehensive security solutions throughout the State of Maryland.

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Copyright © 2024 Defender One. All rights reserved. Site design by Silesky Marketing.

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Chad Emrick

Scheduling Adminstrator

As Scheduling Administrator, Chad leverages twenty years of administrative and management experience to enhance Defender One’s operational excellence. For Chad, the scheduling process is like putting together a puzzle—finding just the right pieces to fill every slot. His strategic mindset and knack for process optimization have consistently elevated his organizational efficiency. The security industry is 24/7. Thus, Chad’s methodical preparation and adaptable management style keeps our operations running smoothly.

When not orchestrating schedules at Defender One, Chad dedicates himself to his treasured role— a devoted family man. He and his wife Wanda have raised four remarkable children. Most recently, adding a new dimension to his life’s joy is his grandson, Leo.

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Phil Kline

Regional Manager – Baltimore Metro Region

Phil’s career began in the U.S. Air Force, where he served as a Military Police Officer. His training as an Internal Response Unit member equipped him with essential skills in safety, security, and crisis management. One of his most fulfilling experiences was responding to Hurricane Sandy, where he played a vital role in assisting those affected by the disaster.

Following his military service, Phil transitioned to the building supply industry, where he spent a decade as an Operations and Sales Manager. During this time, he honed his leadership, process improvement, and industry analysis skills. His passion for identifying opportunities and driving positive change has been a constant throughout his career.

With a strong foundation in problem-solving and a resilient mindset, Phil is dedicated to applying his expertise to create impactful solutions. Whether leading teams, optimizing processes, or tackling complex challenges, he approaches every task with integrity and a focus on results.

Outside of work, Phil is an avid motorcyclist and enjoys spending time outdoors, hiking, and camping. One of his most memorable adventures was conquering the challenging hike to the top of Angels Landing in Zion National Park, Utah.

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Walter Leslie Jr.

Operations Manager

Walter is an observant and vigilant, safety-driven security professional with 14+ years of leadership experience across commercial, residential, and corporate security sectors. Walter offers extensive expertise in developing and executing comprehensive physical security procedures and protocols. Specializing in risk assessments, he has successfully implemented mitigation strategies for clients, reducing potential security threats.

Outside of work, he is family-oriented and enjoys traveling with his wife Jackie, and their dog Aries. He is an avid sports enthusiast and loves the Washington Commanders and Washington Nationals.

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Cynthia Cox

Human Resources Manager

With 21 years of management experience across various industries, including staffing, transportation, small business ownership, accounting, and operations, Cynthia brings a wealth of knowledge and a robust skill set to Defender One. Her diversified background has equipped her with a keen understanding of multiple business domains, making her an invaluable asset to the team.

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Matthew Goodman

Assistant Director of Operations
Matt currently serves as Defender One’s Assistant Director of Operations. Matt is responsible for the day-to-day operations of Defender One and works closely with the Director of Operations & Training to implement goals and objectives for the company. As a nationally certified School Resource Officer and Force Science Analyst, Matt brings an interpersonal and holistic approach to the industry. He holds a Bachelor’s Degree in Criminal Justice from York College. Outside of work, Matt is an avid outdoorsmen, spending time perfecting his landscaping skills. Matt also enjoys quality time with his wife Ashley, and two cats, Ollie and Leo, as well as watching the Baltimore Orioles and Ravens.
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Jennifer Krieger

Director of Human Resources
Jen currently serves as Defender One’s Director of Human Resources, managing our HR and back end finance teams. Jen has 30 years of experience in healthcare benefits administration, retirement benefits, financial planning and human resources. Jen holds a Bachelor’s Degree in Accounting from the University of Maryland, College Park and a Master’s Degree in Finance from Loyola University. Jen prioritizes an employee focused and driven company, with an emphasis on client and employee satisfaction. Outside of work, Jen enjoys running, watching her daughter play Division 1 Lacrosse, and playing with her grand-dogs.
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Jared Krieger

Director of Operations & Training

Jared serves as the Director of Operations & Training at Defender One, where he oversees the company’s operations and staff training programs. He holds a Master of Science in Homeland Security & Disaster Management and a Bachelor of Science in Homeland Security & Counterterrorism. He is a Certified Security Project Manager and is board-certified in security management. He is also board-certified as a Physical Security Professional by the American Society of Industrial Security. As an accredited law enforcement instructor, Jared specializes in multiple disciplines, including Firearms, OC Spray, Expandable Baton, Handcuff Techniques, Taser, Defensive Tactics, and Force Science Analytics.

Outside of work, Jared enjoys traveling and spending time with his girlfriend and their three dogs.

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Jon Krieger

Owner
Jon is the President and Founder of Defender One. Jon started Defender One in 2009, with the goal of bridging the gap between conventional security guards and law enforcement. Jon had a long and distinguished career in a large metropolitan police department for over 30 years, holding supervisory positions in several units, including patrol, internal affairs, traffic and community outreach. Jon has a Bachelor’s Degree in Criminal Justice from the University of Maryland, College Park. Outside of work, Jon spends his time spoiling his grand-dogs Fred and Barney, supporting the Ravens and Orioles, and watching his daughter play Division 1 Lacrosse.
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