Perini Management Services led a design-build team to construct a new building annex for the National Reconnaissance Office (NRO) Operations Squadron in a secure area of Schriever Air Force Base. The building is connected to the existing NRO operations facility via a second story pedestrian bridge. The  annex is constructed of architectural pre-cast concrete wall panels with a steel frame structure and includes a dual height curtain wall. The building was designed and constructed to meet AT/FB and SCIF standards to support the NRO's mission of providing satellite reconnaissance to various government agencies.