The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure four units of a power supply under the presolicitation notice titled "61--POWER SUPPLY, IN REPAIR/MODIFICATION OF." The procurement involves a specific National Stock Number (NSN 7E-6130-015936222) and is characterized by the government's determination that it is uneconomical to purchase the data or rights needed for competitive sourcing, thus intending to negotiate with only one source. This power supply is critical for military applications, and interested parties are encouraged to express their interest and capability to meet the requirement within 45 days of the notice, with all proposals considered by the government. For further inquiries, interested vendors can contact Prabit Dhital at (717) 605-4358 or via email at PRABIT.DHITAL.CIV@US.NAVY.MIL.