Jun 12 3:54 PM ET Email Print Comments105 By Dan Graziano Your questions are so good, it took longer than usual to go through them all this weekend. We'll get right to 'em. milroyigglesfan from Anchorage wants to know how the Rob Ryan "amoeba" will differ from the 3-4 defense the Cowboys had in place before he came on as defensive coordinator, and who might be the missing pieces they can seek in free agency. DG: As I understand it, Rob Ryan's defensive philosophy is similar to that of his brother Rex, which would mean a loose 3-4 with deceptive looks off of which players have the ability to switch if it suits their ability to perform their particular assignments. It requires smart, trustworthy defenders who get what the coaching staff is selling, and for that reason I think there's a chance people might be underestimating the time the Cowboys' players need to get acclimated to Ryan. As for missing pieces, they need secondary help, particularly at safety, where Oakland's Michael Huff seems to be the most popular name in speculation, and could probably beef up at linebacker in case Bruce Carter doesn't pick things up right away.