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Characterizing the structure and kinematics of the gas surrounding supermassive black holes at the centers of galaxies is crucial for understanding accretion and black-hole growth comma as well as outflows and associated feedback for host-galaxy evolution. Intensive comma successful reverberation mapping campaigns with HST on the active galactic nuclei (AGN) of NGC 5548 (Cycle 20) and Mrk 817 (Cycle 28) have revealed a wealth of information on the structure of their broad-emission-line regions (BLR) comma their accretion disks comma and the new comma unexpected obscuring outflows visible in their X-ray and far-UV spectra. The BLR of these AGN are dominated by virial motions comma and the obscuring outflows play a significant role in regulating the ionizing flux reaching the BLR gas. Although HST observations of Mrk 817 are complete comma continued monitoring in X-ray comma UV comma and optical with Swift (2 years comma every other day) comma NICER (1 year comma every other day) comma and ground-based observatories have been approved and are ongoing (private communication). To take advantage of these multi-wavelength programs comma we propose to continue observing Mrk 817 with COS comma with a cadence of one orbit per month throughout Cycle 30. Our primary science goal is to monitor the continued evolution of the obscuring outflow comma perhaps even watching as it dissipates measure its continued impact on the characteristics of the BLR and comma via a triggered observation comma do a comprehensive broad-band evaluation of the state of Mrk 817.s accretion disk and broad emission-line properties once the obscuration has melted away.