The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for the procurement of rotary engine drums, classified under NAICS code 336413. The procurement aims to acquire critical components necessary for aircraft launching equipment, which are essential for the safe operation of naval aviation systems. Given the critical nature of these items, they require engineering source approval from the Naval Air Systems Command, and only previously approved manufacturers will be eligible for award. Interested parties must submit their proposals by the extended deadline of July 15, 2025, and can direct inquiries to Brian Kent at 215-697-0000 or via email at BRIAN.T.KENT.CIV@US.NAVY.MIL.