The National Security Alliance (NSA) is a network of locally owned and operated contract security companies who work together to provide customers with quality contract security services throughout the United States and Canada.

  • Main Offices

  • Branch Offices

Advantage Security, Inc

Vic C. Evans, CPP, CEO
Jeff Rauske, President
13693 East Iliff Avenue, Suite 200
Aurora, CO 80014-1367

Advantage Security, Inc. has built a company that has become a leader in the security industry since its founding in 1995 by delivering quality services such as; uniformed and plainclothes security officers, patrol inspections, investigations/consulting, and integration solutions including cameras, access control systems and remote video monitoring.

700 Employees
2 Branch Offices
States Serviced

Anderson Security Agency, LTD

Kimberly Anderson-Matich, President/CEO
2555 W. Morningside Drive
Phoenix, AZ 85023

Anderson Security Agency Ltd., with headquarters in Phoenix, AZ has stayed on the cutting edge of the security industry since the company began 1994 by not only providing armed and unarmed security officers but by also offering unique solutions such as;  Mobile Command Unit and Sky Watch.

600 Employees
1 Branch Offices
States Serviced

Doyle Security Services, Inc.

Mario J. Doyle, CPP
President & Chief Operating Officer
27 West 20th Street, Suite 604
New York, NY 10010

(516) 362-3677

Founded in 2005, Doyle Security Services, Inc. (DSS) offers security services, including traditional guarding and electronic technology, at best value and at competitive prices, to demanding clientele at geographically dispersed locations. DSS serves a wide range of clients, including major corporations, leading colleges and universities, national utility service providers, media giants, residential communities, hotels and resorts, sports arenas and entertainment venues across New York, New Jersey, Pennsylvania, and Florida. We continuously monitor our security professionals in the field, as well as by cameras, access sensors and alarms at client locations, from our state-of-the-art 24/7 Security Operations Center (SOC), housed in a secure facility with independent power and data backup. DSS is focused on delivering the highest levels of customer service. Our commitment to exceeding our clients’ expectations is at the heart of our organization.

600 Employees
4 Branch Offices
States Serviced


Rob Hundza, Senior Vice President & COO
1100 North Bowser Road
Richardson, TX  75081

GuardTexas, Inc. is a privately owned security services contractor located in Texas. Since May 1976, GuardTexas has been providing security officer, mobile patrol and investigative services for a wide array of business and governmental clients.

1,000 Employees
6 Branch Offices
States Serviced

Logixx Security Inc.

Toronto (Head office)
100-20 Upjohn Road
Toronto, ON M3B 2V9

(416) 760-0000 Toronto office
(833) 456-4499 toll free

Bryan P. Kelly, Executive Vice President, & General Manager
(416 )876-0689 -cellular
(416) 760-0000 ext:218 -office

Logixx Security is a nationwide leader in enterprise security that offers decades of extensive experience in risk assessment, human power services, electronic systems, access control, and multiple state-of-the-art monitoring stations located across Canada. Our dedication to service excellence is what drives our business to protect yours.

We are the intersection of service excellence and superior technology, providing an all-encompassing experience that is unmatched in the industry. Taking the time to get to know each customer, their business, and their goals enables us to conceive a comprehensive strategy that integrates flawlessly. Our discoveries will create the vision for the business; we will minimize risk, protect the people, the information, and the assets.

 3,000 employees
10 Regional Offices, (across Canada)

OSG Logo Vector_OSG Security

Oatridge Security Group

S. COLBY OATRIDGE, General Manager
2111 South 90th St.
Tacoma, WA 98444
(253) 212-3659

Oatridge Security Group (OSG) is a HUBZone certified business headquartered in Tacoma, Washington. OSG’s diverse technical capabilities include virtually every aspect of the security services industry, including armed and unarmed security officers, vehicle and foot patrols, access control, executive protection, and monitoring services. OSG’s management has effectively and efficiently provided security services for data centers, commercial clients, logistics clients, power/energy clients, high-rise buildings, special events, corporate clients, and the U.S. government for over 20 years. Our processes, procedures and programs are designed around varying government agency rules and regulations. OSG’s detailed infrastructure and specialization is unique in the security industry. With more than 20 years of operating history and senior management with over 100 years of combined security industry expertise and experience, OSG has set the standard for security and is established as a business leader in the protective security services industry in the greater Northwest area.


Peak Security, Inc.

Don Weakley, President
3465 West 1500 South
Salt Lake City, UT 84104

Peak Security is a division of Peak Alarm a family owned business established in Salt Lake City in 1969 servicing Utah, Idaho and Wyoming. The services provided by Peak include uniformed Security Officers, mobile patrol, personal protection, alarm installation, monitoring, and customized access control and CCTV systems designed to meet the unique needs of each client.  We are the largest full service security provider in the Intermountain West Region with its own state-of-the-art UL listed alarm monitoring center located at its corporate offices in Salt Lake City.

350 Employees
4 Branch Offices
States Serviced

Per Mar Security Services

Brad Duffy, President of Security Officer Services
1910 E Kimberly Road
Davenport, IA 52807

Per Mar Security Services is the largest family-owned, full-service security company in the Midwest. Since 1953, we have been committed to providing clients with comprehensive security solutions, superior customer service and protection customers can trust. Per Mar provides full-service security solutions for homes and businesses including security officer services, mobile patrol, event services, investigative services, background checks, smart home automation, burglar and fire alarms, access control, security cameras and alarm monitoring.

2,160 Employees
23 Branch Offices
States Serviced

Phoenix Security Hawaii

Phoenix Security Hawaii

Louis Siracusa Jr, President & C.E.O.
286 Kalihi Street
Honolulu, HI 96819
Direct: 808-777-6000

Phoenix Security Hawaii is a local owned full spectrum security firm established in 1994. Our management staff is comprised of local individuals as well as mainland and international transplants with decades of security and law enforcement experience. As a result, we have an admirable understanding of local customs and know the meaning of “the Aloha Spirit”.

262 Employees
4 Branch Offices
States Serviced

Royce-U.S. Protection Service

Joe Conley, President/CEO
4600 Euclid Ave.
Cleveland, OH 44103
Direct: 1-888-769-2301

Since 1976 Royce-U.S. Protections Service has been built on traditional values of hard work, ethical relationship and client partnerships. Our company goal is “complete customer satisfaction”. We value each and every client and will work hard every day to exceed their expectations for quality service. In 2023 Royce-U.S. Protection Service reached a milestone, employing more than 1000 dedicated security officers . Thanks to their hard work we continue expand throughout Ohio Kentucky Michigan and New York and add more partners to our client list. I am proud of our dedicated team members for the outstanding work they provide our clients every day.

1000 employees
9 branch offices 
States Serviced

Security America

Chris Signorelli, President
4700 MacCorkle Avenue SE, Suite 500
Charleston, WV 25304

Security America is a regional, veteran owned business providing quality loss prevention services since 1982. Our professional services include: uniformed security officers; consulting; active shooter drills; training; and investigations. Our clients include manufacturing and industrial plants, office complexes, oil and gas drilling sites, coal mines, hospitals, and more. Our strategic marketing partnerships provide a 360-degree approach. Therefore covering safety services, labor strikes, and electronic security systems. Our mission is to provide the “best protection for the best value while creating “win-win” relationships with our clients.

250 Employees
2 Branch Offices
States Serviced

SSC Inc.

John Kozak, Senior Vice President
20 Controls Drive
Shelton, CT 06484

SSC is a fully integrated provider of uniformed security, consulting, investigative and training services. SSC is privately owned and operated and have been since our founding in 1975. Our consistent growth and success has been accomplished organically, and we are currently positioned as one of the largest full-service security and risk mitigation firms headquartered in the Northeast. SSC provides the highest levels of asset protection to hundreds of customers and we maintain a strong force of professionally trained security officers.

1,000 Employees
4 Branch Offices
States Serviced

Teachout Security Solutions

Joseph R. Cozart, President
2348 Stone Bridge Drive
Flint, MI  48532

Teachout Security Solutions is one of the largest privately held security companies in the state of Michigan. While quality uniformed security service is the backbone of our company, we are truly focused on providing comprehensive solutions to meet the customer’s security specific needs. These solution-oriented services include: armed and unarmed uniformed services, employee screening, corporate investigations, security consulting and educational seminars. Teachout serves a variety of vertical markets with distinction in healthcare and education.

475 Employees
6 Branch Offices
States Serviced