The Naval Surface Warfare Center Indian Head Division (NSWC IHD) requires maintenance and support for a DART-Mass Spectrometer over the span of twelve months, with an option for four additional years. The selected contractor will provide preventative maintenance, which includes one annual on-site service visit accompanied by software updates, and unlimited emergency maintenance visits to address breakdowns within 72 hours of notification. All repairs must utilize factory-certified replacement parts, and service personnel must be US citizens unless special circumstances arise. Additionally, the contractor is responsible for disassembling and reassembling the instrument during its relocation between facilities. Any repairs beyond the contract's scope will need prior approval and an estimate of costs. Work will primarily occur at NSWC IHD's facilities in B600 or B3176, and all associated costs are covered under the contract. Maryanna Lanning is the designated Technical Point of Contact for further guidance regarding the project.