I'm not surprised that they're opening for a band like AA, since Chimaira even at their peak of popularity were not on AA's level. It just sucks that they're billed so low. Especially when you consider that Chimaira played before Whitechapel on a tour not too long ago, now they're playing before them. And before when they were billed this low on a tour of this size it was at least on big arena tours like Music As a Weapon.
08/08 - Slipknot/Lamb of God
09/30 - Revocation
10/04 - The Black Dahlia Murder
11/12 - Kataklysm