The U. S. Navy signed the Weather Research and Forecast (WRF) Agreement in Principle (AIP), effective 18 July 2003, which states that the Navy, among others, have committed to participate in the WRF system in order to improve NWP capabilities through cooperative research and development of the WRF system. In particular, the Naval Research Laboratory, Marine Meteorology Division, Monterey, California (NRL MRY) has been engaged in mesoscale modeling research and development for over 25 years, bringing a wealth of talent and experience to the WRF project. The most recent example of this research is the Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS), which features incremental data assimilation systems for both the atmosphere and the ocean. The atmospheric components include a 3-dimensional variational analysis capability, and a nonhydrostatic model that uses moving nested grids, aerosol prediction, and state-of-the-art physical parameterizations. The ocean components feature a 3-dimensional multivariate optimum interpolation analysis and a hydrostatic ocean model. During the past year, NRL MRY has engaged in research to examine the most practical methods for collaborative research with COAMPS within the WRF framework that will lead to improved mesoscale modeling capabilities. This research includes critical reviews of dynamical frameworks, physical parameterizations, land-surface modeling, code infrastructure, and data assimilation. In addition, NRL MRY has become more involved within the WRF working groups. This presentation will provide a thorough description of our research that is directed toward the manner in which COAMPS and WRF capabilities will be merged.