The United States Air Force Research Laboratory, Warfighter Training Division (AFRL/HEA) developed the MultiTask Trainer (MTT) technology for advanced training research. Defence R&D Canada has recently joined in a partnership with the United States Air Force, under an international Project Arrangement. to develop a CF-18 MTT at AFRL/HEA, Mesa, AZ. An associated research program is being conducted in both countries. Upon completion of the CF-18 MTT, it will be used for joint training and mission rehearsal research and development (R&D) efforts involving the two countries' sponsoring R&D agencies. This paper presents a review of the joint U.S.-Canada program and a proposed plan for joint training research. The current R&D objectives of the program are described, along with how they support the Canadian and United States Air Forces. The challenges encountered putting together a joint international training research program are reviewed, and some lessons learned are presented. The potential to expand the relationship to include other countries is also addressed. Joint training R&D programs such as this one significantly enhance R&D efforts for the participating nations, and will help lay the groundwork for joint international training using advanced simulation facilities.