Killswitch Engage (often abbreviated as KsE or Killswitch) is an American melodic metalcore band from Westfield, Massachusetts. Formed following the disbandment of the bands Overcast and Aftershock in 1999. The band was actually formed by Bassist Mike D'Antonio who got the name from an episode of The X-Files. Killswitch Engage's lineup consists of vocalist Howard Jones, bassist Mike D'Antonio, guitarists Joel Stroetzel and Adam Dutkiewicz, and drummer Justin Foley. Signed to Roadrunner Records, the band has released five studio albums and one DVD.