Uncrewed Systems are significantly expanding observational capabilities in atmospheric science. This expansion is enabled by the increased deployment of uncrewed airborne systems (UAS) and tethered balloon/kite systems (TBS). Rapid adaptation of these platforms and the advancement of miniaturized instruments have resulted in ever-increasing amounts of data supporting operations under various environmental conditions and addressing critical science questions in atmospheric science research. This session invites abstracts discussing contributions to atmospheric science using UAS and TBS platforms. This includes information on recent measurement efforts leveraging these systems, developing new platforms and advanced instrumentation, enhancing the operational network, exploring past field campaigns, and the scientific interpretation of UAS/TBS-based datasets to improve numerical prediction, data assimilation and parameterization development.