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-6130-012175880-LC. The procurement involves a quantity of 8 units, with delivery terms set to FOB Origin, and the government intends to negotiate with only one source under FAR 6.302-1. These electrical converters are critical components for various military applications, and the government is open to considering proposals from all responsible sources within 45 days of this presolicitation notice. Interested parties should direct inquiries to Jeremy P. Barney at jeremy.barney1@navy.mil or by phone at (215) 697-1234.