Amarth ,  Chimaira ,  Gwar , and  Shadows Fall . In October, Job for a Cowboy co-headlined the 2007 Radio Rebellion Tour, teaming up with  Behemoth ,  Gojira  and  Beneath the Massacre .The band featured on the 2008's  Gigantour  with headliners  Megadeth ,  Children of Bodom ,  In Flames  and  High