Stone Solutions and Research Collective (S2RC) is a provider of human systems, research, training, and engineering solutions for the defense sector. It specializes in user experience and interface assessment, studies, design, cognitive systems engineering, ecological interface design, development of fully functional prototypes and wireframes, product integration, mechanical, electrical, systems, and software engineering, etc. The company provides joint terminal attack controller, team awareness kit server, communications, joint fires, and other types of training.