During a two-month period, S.J. Precious contributed to the NCAR/musica and ESCOMP/atmospheric_physics repositories, focusing on both documentation and core model stability. For NCAR/musica, they enhanced the user-defined reactions tutorial, clarifying that reaction rates are provided directly and refining guidance for ambiguous observational scenarios, which improved onboarding and reproducibility. In ESCOMP/atmospheric_physics, they addressed a broken GPU test in the CAM RRTMGP gas optics calculation by removing unnecessary memory allocation and directly accessing the mass mixing ratio, stabilizing the GPU path. Their work demonstrated depth in Fortran, GPU computing, and technical writing, addressing both usability and reliability.