The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair of encryption-decryption equipment under the NSN 7R5810016436601, specifically the part number 4705-03000-15-101, for Foreign Military Sales to Denmark. This procurement is a sole source requirement directed to Mercury Mission Systems, LLC, the Original Equipment Manufacturer (OEM), which possesses the necessary repair data and capabilities. While the contract is intended for the OEM, all responsible sources are encouraged to submit capability statements or proposals for consideration, with a submission deadline of 45 days from the publication of this notice. Interested parties should direct inquiries and submissions to Thomas McLaughlin at 215-697-2486 or via email at thomas.s.mclaughlin7.civ@us.navy.mil.