And this explains why they see this tumultuous period as a window of opportunity.

Public service personnel have been through a tumultuous period.

The deal would resolve all criminal and civil penalties and draw a line under the most tumultuous period in the company's history.

Koff's use of newsreels, photographs and then-contemporaneous interviews with those who lived through this tumultuous period, has been praised for its authenticity and archival value.

We also see during this tumultuous period the building of many fortifications to protect the population from the uncertainties of conquest from abroad.