The Naval Air Systems Command intends to award a sole-source modification to Collins Aerospace for one High Power Transmit Set Modernization production support kit for the E-6B aircraft. Collins Aerospace is the only source with the necessary knowledge, experience, and facilities to support this requirement. This is not a request for competitive proposals, but the government will consider capability statements received within 15 days of this notice's publication. No budget information or performance location is specified in the description. Interested subcontractors should contact Collins Aerospace directly.