The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of power supply units, identified by NSN 7R-6130-016432408-QE, with a quantity of 130 units required. This procurement is critical as the items are flight critical, necessitating Government source approval prior to contract award, and the data needed for competitive acquisition is not readily available. Interested vendors must submit their proposals along with the required source approval documentation within 45 days of this notice, with the primary contact for inquiries being Michael J. Zuccarini at (215) 697-1106 or via email at MICHAEL.ZUCCARINI@NAVY.MIL.