By putting it as a matter-of-fact statement (assuming everything else was action packed) there is a massive shift that creates contrast in the piece and leaves a very concise point to shock/leave the reader with.
Clark expertly navigated their expedition
A so what statement is your point of view on the topic.
It describes how, during a ceremony at the round house, Vince Madwesin, the tribal policeman, was serving off-duty as a security guard. When Vince found some attendees drinking, he asked them to leave out of respect for the ceremony. One of the drinkers stumbled away and was later found dead from choking on his vomit.
I would say the answer is sway