The goal of this study is to examine rapid changes in tornado dynamics and reflectivity structure observed in AIR data. The tornado undergoes a rapid transition from a large diameter with symmetric reflectivity and wind fields to a tornado characterized by an asymmetric wind field with embedded subvortices. Rapid development of an intense near-surface anticyclonic vortex is also observed. To explore the mechanisms causing these rapid changes, single-Doppler analyses are conducted, including three-dimensional axisymmetric wind retrievals and angular momentum analyses. The tornado dissipation phase is also studied in order to investigate mesocyclone- and tornado-scale processes leading to dissipation. Since the AIR collects data simultaneously in a vertical plane, tornado and mesocyclone vertical structure are also emphasized.