The DHS has an urgent, sole-source requirement for the continued performance-based Operational Support Aircraft Maintenance (OSAM) of a Government-furnished C-37B Gulfstream 650ER aircraft under a Government-Owned, Contractor-Operated (GOCO) arrangement. The contractor will provide comprehensive scheduled and unscheduled maintenance, engineering services, and supply chain management to ensure continuous airworthiness and compliance with FAA regulations and OEM guidance. Minimal operational support for inter-agency missions is required upon written DHS authorization and confirmation of funding. The winning contractor had unique immediate access to the aircraft, enabling rapid mobilization without risking mission readiness. This aircraft is essential to DHS homeland security operations, and any downtime directly impacts operational capability.