sentences:  Tuckerman's 17 years as commanding officer was the longest of any commander in the history of the 231st.By 1971, the 231st had a role in both federal and state support with its participation in the DC National Guard's Task Force Blue.This mission enabled the 231st to provide civil support to the District of Columbia during times of civil disturbance or to aid the Metropolitan Police Department by being deputized for other events.