The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support MECH, is seeking to procure sound-controlling materials under the presolicitation notice titled "56--SOUND CONTROLLING B." The procurement involves a quantity of 6 RO of National Stock Number (NSN) 1H-5640-015327076-X3, with delivery required to two locations: DLA Distribution in New Cumberland, PA, and DLA Distribution in Tracy, CA. These materials are critical for military applications, and the government intends to solicit and negotiate with only one source due to the proprietary nature of the data required for procurement. Interested parties are encouraged to express their interest and capability within 45 days of the notice, and they may contact Casey L. Stump at (717) 605-4450 or via email at CASEY.STUMP@NAVY.MIL for further information.