. 4 sentries walking surveillance surveillance potential disasters. Not to community problems solved, then come back again. Must be organized someone to supervise and monitor the situation over time.
4. Travel Guard monitored surveillance surveillance to prevent potential problems that the community has recurring back then. Everything has to be divided among people in line and take care shines track problem situations at all times.
4.watch guard walking track watch, may be caused to resolve issues that the community has, and then it came back again, it must have been a recurring provision of waiting for problems to supervise and monitor the situation.