Suggestions to give our D more "swagger."

Is anyone else of the opinion that the defense (in general) and the secondary (in particular) need to play a lot more aggressively? A lot has been made of the problems facing this defense... but to me, we also just display a very frustrating lack of confidence, aggression, big hits, and just overall "swagger." My question, which is not an attack on GERG, is does that swagger and attitude come solely from the players, or does the DC have an effect on that...or do you think it's impossible to have that confident F the world atttitude when you're just not a very good defense? I think it's an interesting question. There was a play on Saturday when JT Floyd was forced to make a tackle on a player coming downhill at him...if I remember correctly, he was the last defender between the IU player and the end zone. Floyd just kinda let the guy run at him and run him over. I think he made the tackle by grabbing the guys leg, but I remember thinking, "I want my CB to step up and MAKE that tackle." I know he's not a big player, but I feel like I see this kind of thing all game long: a lack of aggression leading to easy gains for the offense. What do you think?