The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of antennas, identified by NSN 7R-5985-014183224-V2, with a quantity of 26 units required. This procurement necessitates engineering source approval to ensure the quality and reliability of the flight-critical components, which can only be sourced from previously approved suppliers due to the unique design and manufacturing knowledge required. Interested parties must submit their proposals along with the necessary source approval documentation within 45 days of this presolicitation notice, and any inquiries can be directed to Jake Kucowski at jake.kucowski.civ@us.navy.mil or by phone at (215) 679-2012.