While there are many units that will not consider a twice passed over individual, there have been cases of at least one unit (probably a few more) that have. Circumstances during ones career may impede an individuals ability to promote. Size of unit/competition, RIF, unit mission, OPRs not having been properly filled/routed/or even a buttdart Commander, but perhaps timing maybe the culprit. We heavily scrutinized an individual and despite the pass overs (he even was given an end date/leave the military in 6 months) we hired him having fully vetted the historical data. We fortunately found the right person for the right niche job based upon their training, knowledge and experience which has paid dividends for our unit and continues. It is fairly obvious most of the time when an individual has failed to promote because they are not meeting or exceeding standards. Your unit must do the leg work if they are so inclined. Granted, if there are a plethora of highly qualified candidates, then timing will not be in your favor...