I have heard several people on here saying they are pre-req. What does this mean? How did you become pre-req? If you are pre-req are you certain to get a SNA spot if thats what you applied for? When do you do the PRT and MEPS? I have read that you do the PRT no later than 30 days and no earlier than 14 days before you leave for OCS. I have also heard of people doing it for their application so which is it? I assume MEPS would be around the same time and slightly before the PRT is this correct? How can I get my hands on the Marine gouge that I have heard everyone say is a great study guide? Thanks.