Experience, Expertise and Integrity. The SPECTRUM Group provides our commercial, government, international, and non-profit clients with the tools and counsel necessary to achieve their objectives.We provide a broad range of goal-oriented consulting, government contracting, congressional and executive relations and due diligence services throughout our six Centers of Excellence: Defense & Aerospace, Security, International, Government Relations, Healthcare & Bio-Sciences, and Energy, Installations & Environment. The SPECTRUM Group (TSG) is a dynamic alliance of more than 80 highly respected and experienced subject matter experts from diverse professional and political backgrounds. The TSG team includes former CEOs and senior executives, senior leaders in the military and intelligence communities, former federal senior executives, legislative affairs experts, investment bankers, and community development leaders. Today we are fortunate to serve an impressive array of clients from startups to Fortune 500 companies, states and local communities, the federal government, and international entities.