They all started to get afraid due to an unexpected fall-out of things going around them.
Is this sentence grammatically correct? Fall-out here means "the adverse results of a situation or action."
It should be something like the following: They all started to get afraid due the unexpected fall-out from the things going on around them.
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It should be something like the following:
They all started to get afraid due the unexpected fall-out from the things going on around them.