The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of a power supply component, identified by NSN 7R-6130-014956214-QE, with a quantity of 128 units required. This procurement necessitates engineering source approval due to the flight-critical nature of the item, meaning that only approved sources can be considered for the contract, and new sources must undergo a qualification process as outlined by the Government engineering activity. Interested parties must submit their proposals along with the necessary source approval documentation within 45 days of this presolicitation notice, and any inquiries should be directed to Alyssa T. Thieu at (215) 697-0169 or via email at ALYSSA.THIEU@NAVY.MIL.