this is from the Yahoo News story about the manhunt for the ex-policeman who is on the run.
In June 2011 a county sheriff in North Dakota was trying to track down three men, possibly carrying guns, in connection with some missing cows. He had a lot of ground to cover, so—as one does—he called in a Predator drone from a local Air Force base. It not only spotted the men but could see that they were in fact unarmed. It was the first time a Predator had been involved in the arrest of U.S. citizens.
What is the meaning of 'as one does' here?