I know there have been several posts about the 3-4 defense, what it entails and how it differs from the 4-3.  Im getting a better understanding of how its supposed to work, but Im still confused with the ILB's and their roles.  From my understanding 1 LB is supposed to be taking on the O Linemen, meaning this LB will be the bigger and stronger of the two.  The other is supposed to be the quicker, faster LB who can cover the field sideline to sideline.  Is my understanding of this correct?  And where do the LB's currently on our roster fall in these categories?