According to Nepali authorities, at least 900 workers at hydropower projects all along the river are unaccounted for,  and there is a belief some number of them might be trapped inside tunnels connected to the facilities. Anderson visits two different sites where those rescue operations are underway, and he speaks to Nepal's first female helicopter captain, Priya Adhikari, who has already flown around 100 rescue missions in the last few days since the flood.

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