The National Security Alliance

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.

This unique alliance provides its customers with a local owner/operator that has years of experience, a proven track record, strong local recognition and longstanding ties to the community in which they live and work in.

All NSA member companies are run by business owners who understand the marketplace they operate in. They run successful businesses because they have attuned their business model to match the areas in which they operate.

The National Security Alliance is comprised of security companies with locations across the United States and Canada.


  • 12 Companies
  • 12,580 Employees
  • 115 Branch Offices
  • Licensed in 47 States
  • and 9 Provinces

Through our network of member companies, NSA is able to provide security officer services, special event security and risk management solutions for a wide range of industries across the nation, including but not limited to: property management, residential communities, corporate office facilities, retail stores, manufacturing and industrial plants, warehousing facilities

National Security Alliance

Companies, organizations and vendors partner with the National Security Alliance offering discounts to better serve NSA member companies for products, solutions and education.

What Our Clients Say

The National Security Alliance supports a wide number of companies around the United States. NSA plays a vital role in protecting and monitoring sound security programs. Customers benefit from security executives and experts who can provide the personal attention your account deserves.  NSA, aligned to support you nationally while providing personal attention from coast-to-coast.

“Peace of Mind!”

“With 25 years of experience dealing with various security providers, Per Mar is by far the most reliable and easiest to do business with. Both their security officers and technicians are knowledgeable and dependable. As a safety professional having responsibility for a large manufacturing facility, it gives me peace of mind knowing Per Mar is on duty with security officers onsite and alarm monitoring centers backing them up.”

Patrick | Wisconsin Window & Door Company

“Always Professional”

“My experience working with Per Mar has been very enjoyable. They value us as a customer and if there is a concern, they are quick to address it. Per Mar security officers work together with our Public Safety officers as a team on challenging situations. They are always professional while providing great customer service.”

Ted | Des Moines, Iowa Area Hospital

“Recommend Them to Anyone”

“We recently utilized security officers at a job site about 45 miles from our office. We had tens of thousands of dollars’ worth of equipment waiting to be installed. It was a relief for us to know that Per Mar had a security officer on site over night while my crews were at home. The staff was flexible, adjusted to our needs, and ensured that when the general contractor was ready for us, we had the equipment ready to go. I will definitely use Per Mar again and recommend them to anyone.”

Todd |  Heating & Air Conditioning Company