Provided by the Joint Interoperability Test Command (JITC) upon completion of testing. Valid for 4 years from the date of the certification or when subsequent program modifications change components of the NR-KPP or supportability aspects of the system (when materiel changes (e.g., hardware or software modifications, including firmware) and similar changes to interfacing systems affect interoperability, upon revocation of joint interoperability test certifications, and/or non-materiel changes occur that may affect interoperability).