The U.S. Department of State seeks a single-award IDIQ contract for a comprehensive, technically rigorous worldwide maintenance and repair program for over 270 embassies, consulates, and diplomatic facilities. This is a Sources Sought notice for market research only, not a solicitation, and is limited to small businesses under NAICS 561210 that possess an active Top Secret Facility Clearance. The program requires proven capability in mission-critical systems including power generation, electrical distribution, HVAC, building automation, water treatment, and roofing, with emergency response in austere, high-threat overseas environments. Performance will be worldwide at U.S. diplomatic facilities, and responses are due by July 30, 2025, at 4:00 PM Eastern. No budget amounts are specified in this notice.