Your team member must have acted quickly!
Da Nang was probably hotter and more humid than my experience sailing through Diego Garcia in the Indian Ocean on The Enterprise.
Thick clouds of mosquitos everywhere after dusk. Beautiful clean water, though.
James Michner’s Tales in Paradise had a good story about a contractor Forman who ran out to a crash landed plane to chew out the pilot for damaging his unfinished runway. Hi died in the end.
I was on Diego Garcia in 1973. None of our Seahuts were air-conditioned. The first Seabees landed in 1971. Seabees built the base. But I don’t remember any mosquitoes.