The four officers are working in jobs that do not involve carrying weapons.
Last year, there were about 1,400 incidents involving weapons in the schools.
They were concerned that this might lead to a major war with China, possibly involving nuclear weapons.
One book's worth of decisions, involving nuclear weapons, was considered on June 15 and 16.
But these skirmishes involved few weapons of any kind, he said.
Some of the trade here apparently involves major weapons and equipment.
Some told other soldiers about their take, particularly when it involved weapons.
About 90 percent of the 2,300 murders last year involved deadly weapons.
None of the fights on Friday involved weapons, the police said.
Q - Let me go back to the most recent crisis involving nuclear weapons.