Defense Systems and Services, LLC Federal contractor and technology consulting firm working in areas such as Cyber Security, Intelligence, Program Management, Technical Solutions, Strategic Planning, Project Pricing, Proposal Management and Business Development (B2B). http://www.DefenseS2.com Phone 757-243-2408 Contact Kevin L Shelton Email kevin.shelton@DefenseS2.com Yorktown, VA 23692 Hours of Operation 0800 - 1600 Business Tags Federal Contractor, Technology