routine inspection of a UAS system prior to a flight

Two U.S. Geological Survey Unmanned Aircraft Systems (UAS) pilots perform a routine inspection of a UAS system prior to a flight at the summit of Kīlauea Volcano in June 2018. The UAS for this particular flight was outfitted with a multi-gas sensor to identify any new degassing sources within the collapsing summit caldera. All UAS flights inside Hawai‘i Volcanoes National Park were conducted with explicit permission of the National Park Service.