Once you get into prison life, you start to realize that there are different layers of prisoners. One group that usually has it pretty well is the trustees. These inmates are recognized for their good behavior by the powers that be and are given special duties and rights that the other inmates do not have.
At the receiving center, this was also the case. The trustees were allowed to have some benefits, such as a pool room, single cells, and sometimes better food. In exchange, the trustees performed tasks given to them that required some trust on the part of the administration. They were allowed out of their cells to do them when everyone else was on lockdown.
There has always been the perception that all trustees will “snitch” when they get the chance. While this is sometimes true, it is not always the case. They do sometimes provide services to the other inmates by being “Mules” that is, they would sometimes deliver items such as cigarettes and food to other inmates who could not send or receive them otherwise.