The best case of the agency is best (everyone behaves and is happy), but the worst case of the agency is worst overall (all the children go into hysterics at once).
The best case of the agency is when everyone is behaved and is happy.
Pretty soon there won't be no need for wearin' guns loose an' tryin' to grow eyes in th' back of yore skull!"But Fenner's own rifle still rode on guard across his knees, and Drew noted that the scout never broke a searching survey of the countryside.