Superintendent - Construction. SPG Inc. About SPG Inc. SPG Inc., a veteran-owned small business based in Warrenton, Virginia, is a recognized leader in the provision of comprehensive solutions for sensitive facility requirements. Specializing in the construction, testing, training, and accreditation support of Sensitive Compartmented Information Facilities (SCIF), Special Access Program Facilities (SAPF), and other secure environments, SPG boasts...
