Supporting information for : James, M. R., Carr, B. B., D’Arcy, F., Diefenbach, A. K., Dietterich, H. R., Fornaciai, A., Lev, E., Liu, E. J., Pieri, D. C., Rodgers, M., Smets, B., Terada, A., von Aulock, F. W., Walter, T. R., Wood, K. T., and Zorn, E. U. (2020), Volcanological applications of unoccupied aircraft systems (UAS): Developments, strategies, and future challenges. Volcanica 3(1) pp. 67-114. doi: 10.30909/vol.03.01.67114 File descriptions: Supplementary Material 1: USGS-CVO_sUAS_Project_Aviation_Safety_Plan_(PASP)_example.pdf - Example of a detailed safety plan as used by the USGS. Supplementary Material 2: ExamplePreFlightChecklist.docx - Example of a concise pre/post-flight checklist form Supplementary Material 3: Santiaguito_explosion_Caliente_151231.mov - UAS-acquired video footage of an explosion at Santiaguito