This is a market research announcement for preventative maintenance and emergency services on a Giant Voice System at Joint Base Charleston in South Carolina. The work involves two semi-annual inspections of 16 sirens and three control points across Charleston AFB and Charleston NWS, requiring SiRcom certified technicians. The government is seeking capability statements from interested contractors, including their business size classification for NAICS 811210. Responses are due via email by Monday, March 23, 2026. No budget information is specified in this announcement.