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Service you can trust

Private Protection Services

Personalized security for executives, VIPs, public figures, and high-risk individuals across Maryland, DC, and Northern Virginia.

Armed & Unarmed
Body Guards

Our professionally trained guards—armed or unarmed—deliver visible, reliable protection tailored to your site’s needs.
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Discreet Executive
Protection

Providing discreet, proactive protection that adapts to your schedule, safeguards your reputation, and minimizes risk.
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Secure Transport & Protective Escort

Travel with confidence escorted by highly trained tactical personnel focused on getting you to and from your destination safely.
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Residential & Family Protection

Protect yourself and your loved ones with discreet, personalized security that prioritizes safety at home and beyond.

Elite Protection, Tailored to You.

High-level Protection Personalized for Every Situation.

When safety is critical, you need more than just a guard—you need a strategic security partner. Defender One’s Private Protection Services are delivered by trained, vetted professionals with backgrounds in law enforcement, military, and private defense.Whether you need protection for a high-profile appearance, corporate function, or daily routine, we build a custom plan that prioritizes your safety without disrupting your lifestyle.

Trusted by Executives, Celebrities & Private Clients alike

Why Choose Us?

We protect clients in corporate, political, entertainment, and high-net-worth circles. Your safety is always our top priority—and your privacy is guaranteed. As a family-owned business, your safety is personal to us. We take a holistic, hands-on approach to your security needs.

Fully Licensed, Insured & Discreet

Our team operates with full licensing and insurance, delivering professional protection with the discretion your privacy demands

Professionals with Real-World Tactical Training

Every security specialist is rigorously trained and experienced in high-risk, real-world environments—many with law enforcement or military backgrounds.

Customized Security Plans – No One Size Fits All

We tailor every protection detail to your unique needs, lifestyle, and risk profile for unmatched personal security.

Get in Touch

Your circumstances are unique. Let’s design a protection plan that matches your risk level, lifestyle, and daily routine.—whether it’s short-term coverage or long-term protection. Get a free consultation today. No obligation, just expert advice.

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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 © 2025 Defender One. All rights reserved. Site design by Silesky Marketing.

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Chad Emrick

Scheduling Administrator

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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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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Jennifer Krieger

Chief Administrative Officer

Jen currently serves as Defender One’s Chief Administrative Officer, managing the 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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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 dog Abe and grand-dogs Fred and Barney, supporting the Ravens and Orioles, and watching his daughter play Division 1 Lacrosse.

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