My search skillz are failing me - someone posted a link to a Raven site that had an interview with the new Ravens DC. He talked about the scheme, and it sounded really weird - I think they'll have 3 actual linemen, then run one of the LBs up to the line for a 4-man front each play. They had weird names for some of the positions, like End Backer or something. I think their positions are going to change radically from play to play - Ed Reed will be FS or LB, Suggs/Cody/Adalius will be LB or DE, Polley will drop back into coverage at times... I know that stuff happens in every defense, but it really sounds odd in theirs. I get the impression that they think their CBs are good enough that they're going to stack the run every play and assume the CBs can handle anything the WRs can do.