The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of five gas turbine power units, identified by NSN 7R-2835-013692818-VH and reference number 116305-302. This solicitation is classified as a presolicitation notice, indicating that the item is flight critical and requires government source approval prior to contract award, limiting the solicitation to previously approved sources only. Interested vendors must submit comprehensive technical data and documentation as outlined in the NAVSUP Source Approval Information Brochures, as offers lacking the required information will not be considered. For inquiries, potential bidders can contact Svitlana Shvets at (215) 697-6278 or via email at svitlana.shvets@navy.mil.