Who We Are The Armstrong Group is a family owned and operated collection of diverse companies. What began in 1946 as Armstrong County Line Construction, founded by Jud L. Sedwick in Kittanning, PA, has now grown into an organization that encompasses multiple industries and employs over 2,400 individuals nationwide. Our brands include Armstrong Utilities, Guardian Protection, Armstrong Development, 4Front Solutions, Twin Pops, and Armstrong Comfort Solutions. Armstrong is an Equal Opportunity Employer.