During September 2025, Michael Boucher focused on improving the physical modeling in the nu-radio/NuRadioMC repository by addressing a bug in the calculation of the index of refraction (ior) and its gradient at the ice-to-air boundary. Using Python and applying expertise in numerical methods and physics simulation, he corrected inconsistencies between 1D and 2D array handling within the IceModelSimple and IceModelExponentialPolynomial modules. This work ensured accurate boundary condition treatment and improved the reliability of air transition modeling. Michael also updated the project documentation and changelog, reflecting a thorough and detail-oriented approach to scientific software engineering.