The Naval Sea Systems Command intends to issue a sole-source contract modification to L3Harris Technologies for continued Configuration Management and Engineering Support Labor for Nulka Y Payload Assemblies, supporting both the U.S. and Australia. The modification will increase the contract ceiling and add one additional option year of engineering support. L3Harris, located in Clifton, New Jersey, is the only vendor deemed qualified to meet the Navy's schedule requirements. This notice is not a request for competitive proposals, but the government will consider responses from interested parties. Parties seeking subcontracting opportunities should contact L3Harris directly.