The Department of Defense, specifically the Department of the Navy through NSWC Crane, is seeking a sole source contractor for the maintenance, repair, and upgrade of Government Furnished Equipment (GFE) related to the Simplified Driver (SDR) and Continuous Wave Illuminator (CWI) Microwave Tubes (MWTs). The procurement aims to ensure the operational readiness and reliability of critical microwave tube equipment used in various defense applications. This opportunity falls under the Engineering Services industry (NAICS 541330) and is categorized for equipment and materials testing related to ship and marine equipment (PSC H220). Interested parties can reach out to Kori Koss at kori.l.koss.civ@us.navy.mil or by phone at 812-805-0753 for further details regarding this presolicitation notice.