The Defense Health Agency (DHA) intends to negotiate a sole source contract for maintenance services of Varian Linear Accelerator Radiotherapy Systems at the Naval Medical Center Portsmouth (NMCP) and Keesler Medical Center (KMC). The contract will cover non-personal services, including preventive maintenance, corrective maintenance, and unlimited telephone support, ensuring that the systems operate within original equipment manufacturer specifications and comply with all relevant regulations. This maintenance is critical for the effective functioning of the radiation oncology equipment, which includes multiple Varian TrueBeam Linear Accelerators and associated software licenses. Interested parties must submit capability statements by 4:00 P.M. on September 15, 2025, via email to Christine Russman at christine.l.russman.civ@health.mil, as no competitive proposals will be solicited.