Is four year strong a straightedge band?

Most, if not all, of the members of Four Year Strong are Straight Edge. However, I'm not sure if I would consider them a straight edge band. I'm not sure they project those beliefs through their lyrics or not.

Only Dan and Alan are straightedge. Josh, Jake, and Joe aren't. They're not really a "straight edge band" like H2O, Terror, etc. but they do promote straight edge... Silverstein and Rise Against are great straight edge bands also.

- Umm, Silverstein is not a straightedge band. Only a couple people in the band are.