This is the 5071st most frequent Japanese word.
要員
"Personnel" or "staff member."
Here '要員' is used to refer to personnel designated for special tasks during emergencies.
工場の火事に迅速に対応するため、非常要員が招集されました。
Emergency personnel were mobilized to swiftly respond to the factory fire.
In this case, '要員' means individuals assigned to tasks or roles in a specific project.
新プロジェクトに必要な要員は、来月から配属される予定です。
The personnel required for the new project are scheduled to be assigned starting next month.
Here, '要員' indicates individuals organized for supporting the event's logistics.