Pro Board only means the board has received and accepted a package. It means all the paperwork's there. Pro Rec Y means a board has professionally recommended a person for commission. NRDs do not forward every applicant's package to NRC - just the most qualified packages. It is possible to interview for a DCO program locally and not even be considered nationally if the NRD does not forward the package. NAVCRUIT 1131/5's are important but so is the OIC endorsement letter (specific to DCO). If a person does not receive 100% confidence from the unit OIC, the OIC is essentially telling NRC: "I may or may not have a billet for this person if he/she is selected." It has nothing to do with actual billets (since new accessions start in IAP status) and is more a filtering mechanism. If below 100%, there is little incentive for the NRD to send it up to NRC where selection becomes even more competitive.